{"product_id":"tcl-sj-sb-d5500801-led-backlight-strips","title":"TCL 55S421 55S423 55S425 LED Backlight Strips 4-Piece Set","description":"\u003cstyle\u003e\n\n\n.gy-desc-tcl-d5500801{max-width:1100px;margin:0 auto;color:#24303a;font:inherit;line-height:1.6}\n.gy-desc-tcl-d5500801 *{box-sizing:border-box}\n.gy-desc-tcl-d5500801 h2{font-size:1.58em;line-height:1.28;margin:28px 0 13px;color:#172733}\n.gy-desc-tcl-d5500801 h3{font-size:1.25em;line-height:1.35;margin:16px 0 11px;color:#172733}\n.gy-desc-tcl-d5500801 h4{font-size:1.06em;line-height:1.4;margin:14px 0 9px;color:#24303a}\n.gy-desc-tcl-d5500801 p{margin:9px 0 13px}\n.gy-desc-tcl-d5500801 ul{padding-left:23px;margin:8px 0 15px}\n.gy-desc-tcl-d5500801 li{margin-bottom:6px}\n.gy-desc-tcl-d5500801 img{display:block;width:auto;max-width:100%;height:auto;margin:0 auto}\n.gy-desc-tcl-d5500801 a{color:#a42823;text-decoration:underline;text-underline-offset:2px}\n.gy-desc-tcl-d5500801 .gy-grid{display:grid;grid-template-columns:1fr 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.gy-smallprint{font-size:.88em;color:#586772}\n.gy-desc-tcl-d5500801 .gy-unboxing{max-width:970px;margin:20px auto 26px;padding:16px 0;border-top:1px solid #e1e6e9;border-bottom:1px solid #e1e6e9}\n.gy-desc-tcl-d5500801 .gy-unboxing h3{margin:5px 0 11px}\n.gy-desc-tcl-d5500801 .gy-unboxing video{margin:13px auto}\n\n.gy-desc-tcl-d5500801 .gy-photo-label{font-size:.9em;text-align:center;color:#586772;margin:8px auto 0}\n.gy-desc-tcl-d5500801 .gy-intro-video{display:block;max-width:970px;margin:0 auto}\n.gy-desc-tcl-d5500801 .gy-models td:first-child{font-weight:600}\n.gy-desc-tcl-d5500801 .gy-data td{overflow-wrap:anywhere}\n.gy-desc-tcl-d5500801 .gy-video-fallback{font-size:.9em}\n.gy-desc-tcl-d5500801 .gy-unboxing video{background:#f2f5f6;aspect-ratio:16\/9;object-fit:contain}\n\n\n.gy-desc-tcl-d5500801 .gy-card img{width:100%;max-height:280px;object-fit:contain}\n.gy-desc-tcl-d5500801 .gy-seo-reference{font-weight:600;overflow-wrap:anywhere}\n.gy-desc-tcl-d5500801 .gy-wide-img figcaption{font-size:.9em;text-align:center;color:#586772;margin:7px auto 0}\n.gy-desc-tcl-d5500801 .gy-model-family{margin:13px 0 9px}\n.gy-desc-tcl-d5500801 .gy-chip{display:inline-block;margin:3px 7px 4px 0;padding:5px 10px;background:#eef3f6;border-radius:4px;font-size:.92em}\n.gy-desc-tcl-d5500801 .gy-desc-callout{background:#f5f8fa;padding:13px 17px;border-radius:5px}\n.gy-desc-tcl-d5500801 .gy-unboxing video{width:100%;background:#f2f5f6;aspect-ratio:16\/9;object-fit:contain}\n\n\u003c\/style\u003e\n\u003cdiv class=\"gy-desc-tcl-d5500801\" lang=\"en-US\"\u003e\n\u003csection class=\"gy-top\"\u003e\n\u003ch2\u003eTCL 55S421, 55S423 \u0026amp; 55S425 LED Backlight Strips Replacement\u003c\/h2\u003e\n\u003cdiv class=\"gy-grid\"\u003e\n\u003cdiv class=\"gy-visual\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/4353\/0021\/files\/55S421_55S423_55S425.jpg?v=1789887058\" alt=\"GuuYebe four-piece LED backlight strip set for select TCL 55S421 55S423 and 55S425 55-inch TVs\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp class=\"gy-kicker\"\u003eGuuYebe TV LED backlight replacement\u003c\/p\u003e\n\u003ch3\u003e4-Piece A+B LED Backlight Set for Select TCL 55-Inch TVs\u003c\/h3\u003e\n\u003cp\u003eReplacement TV LED backlight strip set for select TCL 55S421, 55S423 and 55S425 models using the listed SJ.SB.D5500801-3030H-family markings. The package contains four physical strip pieces. Confirm the A+B arrangement, original printed part numbers, connectors and mounting layout before ordering.\u003c\/p\u003e\n\u003ch4\u003eProduct Information\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 1,013 mm for the listed A+B assembly (not stated as the length of each individual piece)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED count:\u003c\/strong\u003e 15 LEDs for the listed A+B strip configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndividual LED voltage:\u003c\/strong\u003e 6 V per LED, as supplied\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage includes:\u003c\/strong\u003e 1 set of 4 LED strip pieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"gy-smallprint\"\u003eThe original listing gives length and LED count for “A+B.” It does not supply separate dimensions or LED counts for each individual A or B piece.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"gy-block\"\u003e\n\u003ch2\u003eCompatible TCL 55-Inch TV Models\u003c\/h2\u003e\n\u003cdiv class=\"gy-grid\"\u003e\n\u003cdiv\u003e\n\u003ch3\u003eCommon TCL Model References\u003c\/h3\u003e\n\u003cp\u003eThe supplied fitment file lists TCL 55S421, 55S423 and 55S425 families, including full suffixes such as 55S421LBAA and 55S425TFBA. Find the complete model identifier on your TV label. The file does not specify production versions, and a matching model number alone does not guarantee that the installed LED assembly is identical.\u003c\/p\u003e\n\u003cdiv class=\"gy-scroll\"\u003e\n\u003ctable class=\"gy-data gy-quick-models\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003eTCL TV model\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eListed version(s)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e55S421\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in supplied list\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e55S421LBAA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in supplied list\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e55S423\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in supplied list\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e55S423TCAA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in supplied list\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e55S425\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in supplied list\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e55S425LFBA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in supplied list\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e55S425TFBA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in supplied list\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gy-visual\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/4353\/0021\/files\/55S421_9c87bab5-e321-44e9-8208-8b7bd9eb5ca9.jpg?v=1789886623\" alt=\"TCL 55S421 55S423 55S425 backlight replacement assembly visual for comparing 4C-LB5507-HR03J and strip shape\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gy-note\"\u003e\n\u003cstrong\u003eImportant fitment check:\u003c\/strong\u003e Compare your original A+B strip layout, printed identifiers, assembled 1,013 mm length, 15-LED configuration, 6 V LED specification, connectors and mounting-hole positions. Some model families can have different assemblies across production runs; verify your TV version and original parts before ordering.\u003c\/div\u003e\n\u003ch3\u003eComplete Known-Models List — 14 TCL TV Model Identifiers\u003c\/h3\u003e\n\u003cp\u003eAll 14 identifiers below come from the supplied TCL compatibility file. Grouping by model family is for readability only. “Not specified” means the source did not provide a separate version code; it does not mean every production version is supported.\u003c\/p\u003e\n\u003cdetails class=\"gy-model-group\" open=\"\"\u003e\n\u003csummary\u003eTCL 55S421 family \u003cspan class=\"gy-count\"\u003e3 model identifiers\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"gy-scroll\"\u003e\n\u003ctable class=\"gy-data gy-models\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003eTCL TV model\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eListed version(s)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e55S421\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e55S421LBAA\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e55S421ZCAA\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"gy-model-group\"\u003e\n\u003csummary\u003eTCL 55S423 family \u003cspan class=\"gy-count\"\u003e3 model identifiers\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"gy-scroll\"\u003e\n\u003ctable class=\"gy-data gy-models\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003eTCL TV model\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eListed version(s)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e55S423\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e55S423LEAA\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e55S423TCAA\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"gy-model-group\"\u003e\n\u003csummary\u003eTCL 55S425 family \u003cspan class=\"gy-count\"\u003e8 model identifiers\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"gy-scroll\"\u003e\n\u003ctable class=\"gy-data gy-models\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003eTCL TV model\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eListed version(s)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e55S425\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e55S425LACA\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e55S425LDAA\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e55S425LFBA\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e55S425LHBA\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e55S425MABA\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e55S425TFAA\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e55S425TFBA\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdiv class=\"gy-support\"\u003e\n\u003ch3\u003eFitment Support Before Ordering\u003c\/h3\u003e\n\u003cp\u003eIf you are unsure which TCL backlight strips your TV uses, email the complete TV model number, the rear-label version if shown, and clear photos of the original strip codes and connectors. We can help you compare the references before purchasing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEmail:\u003c\/strong\u003e \u003ca href=\"mailto:support@guuyebe.com\"\u003esupport@guuyebe.com\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"gy-block\"\u003e\n\u003ch2\u003eProduct Parameters and Part Number Identification\u003c\/h2\u003e\n\u003cdiv class=\"gy-grid\" style=\"align-items: start;\"\u003e\n\u003cdiv\u003e\n\u003ctable class=\"gy-data gy-spec\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePrimary listed part number\u003c\/th\u003e\n\u003ctd\u003eSJ.SB.D5500801-3030H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDetailed part reference\u003c\/th\u003e\n\u003ctd\u003eSJ.SB.D5500801-3030HL-M-HF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePart type\u003c\/th\u003e\n\u003ctd\u003eLED backlight strips for LED\/LCD TV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eA+B assembly length\u003c\/th\u003e\n\u003ctd\u003e1,013 mm (A+B, per supplied listing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLED count\u003c\/th\u003e\n\u003ctd\u003e15 for the stated A+B arrangement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eIndividual LED voltage\u003c\/th\u003e\n\u003ctd\u003e6 V per LED (as listed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePackage contents\u003c\/th\u003e\n\u003ctd\u003e4 LED strip pieces (1 set)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSubstitute references listed\u003c\/th\u003e\n\u003ctd\u003eGIC55LB111\u003cbr\u003eGIC55LB112\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e180-Day Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable class=\"gy-data gy-spec\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePanel references listed\u003c\/th\u003e\n\u003ctd\u003eLVU550NDEL SJ9W01 V3\u003cbr\u003e08-556000-LPN004C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBoard \/ strip markings from listing\u003c\/th\u003e\n\u003ctd\u003eSJ.SB.D5500801-3030HR-M-HF\u003cbr\u003eSJ.SB.D5500801-3030HL-M-HF\u003cbr\u003e4C-LB5507-PF01J\u003cbr\u003e4C-LB5508-PF01J\u003cbr\u003e4C-LB5507-PF05J\u003cbr\u003e4C-LB5508-PF05J\u003cbr\u003eKW-55D-L08-20190725V3\u003cbr\u003eKW-55D-L07-20190725V3\u003cbr\u003e4C-LB5508-HR\u003cbr\u003e4C-LB5507-HR02J\u003cbr\u003e4C-LB5507-HR03J\u003cbr\u003e55HR330M07B2\u003cbr\u003e55HR330M08A2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAdditional markings from supplied parameters\u003c\/th\u003e\n\u003ctd\u003e1.14.HBMD550002\u003cbr\u003e1.14.HBMD550003\u003cbr\u003eSJ.SB.D5500701-3030HR-M-HF\u003cbr\u003e55HR330M08 V2\u003cbr\u003e55HR330M07B2 V2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gy-note\"\u003e\n\u003cstrong\u003eVerify printed markings:\u003c\/strong\u003e The Amazon-style product description lists \u003cstrong\u003eSJ.SB.D5500801-3030HR-M-HF\u003c\/strong\u003e, while the separate product-parameters file also lists \u003cstrong\u003eSJ.SB.D5500701-3030HR-M-HF\u003c\/strong\u003e. These are reproduced as separate source references—not a guarantee that the two right-hand strip numbers are interchangeable. Likewise, the supplied parameters include one incomplete reference (“1.14.HBMD55000”), which is omitted from the identification table to avoid implying an exact part match.\u003c\/div\u003e\n\u003cfigure class=\"gy-wide-img\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/4353\/0021\/files\/GIC55LB111.jpg?v=1789886712\" alt=\"TCL SJ.SB.D5500801-3030H LED backlight strips product identification photo with A+B reference markings\" loading=\"lazy\" decoding=\"async\" style=\"width: 100%; max-width: 970px;\"\u003e\n\u003cfigcaption\u003eProduct identification photo — compare the A+B strip dimensions and printed identifiers with your removed assembly.\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"gy-wide-img\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/4353\/0021\/files\/SJ.SB.D5500801-3030HL-M-HF.jpg?v=1789886713\" alt=\"TCL 55S421 55S423 55S425 LED backlight strips additional identification photo including 4C-LB5507 and 4C-LB5508 reference codes\" loading=\"lazy\" decoding=\"async\" style=\"width: 100%; max-width: 970px;\"\u003e\n\u003cfigcaption\u003eAdditional product reference image from the supplied listing.\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003csection class=\"gy-unboxing\"\u003e\n\u003ch3\u003eTCL 55S421 \/ 55S423 \/ 55S425 Backlight Strips Unboxing Video\u003c\/h3\u003e\n\u003cp\u003eView the supplied GuuYebe product video to check the four-piece replacement set against your original TCL TV backlight assembly. Use the video together with the reference images and measurements above; visual similarity alone does not confirm compatibility.\u003c\/p\u003e\n\u003cvideo controls=\"controls\" preload=\"none\" playsinline=\"\" poster=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/4353\/0021\/files\/GIC55LB111.jpg?v=1789886712\"\u003e\u003csource src=\"https:\/\/cdn.shopify.com\/videos\/c\/o\/v\/b27a89fc301e405c94fe75b4cbc3c379.mp4\" type=\"video\/mp4\"\u003eYour browser does not support HTML5 video.\u003c\/source\u003e\u003c\/video\u003e\n\u003cp class=\"gy-small\"\u003eThe video uses the supplied 55S425 poster image and product MP4. Compare the physical A+B strip layout and visible markings before purchase.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/section\u003e\n\u003csection class=\"gy-block\"\u003e\n\u003ch2\u003eLED Backlight Strip Details\u003c\/h2\u003e\n\u003cdiv class=\"gy-cards\"\u003e\n\u003cdiv class=\"gy-card\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/4353\/0021\/files\/55HR330M08A2_9daced31-6a9d-4e3d-97f4-f2d35550bf81.jpg?v=1789886876\" alt=\"TCL backlight LED lens detail for the listed SJ.SB.D5500801-3030H strip family\" loading=\"lazy\" decoding=\"async\"\u003e\n\u003ch3\u003eLED Beads and Optical Lenses\u003c\/h3\u003e\n\u003cp\u003eThe source lists 15 LED beads for the A+B assembly and 6 V per LED. Compare the complete A+B lens layout and spacing; the source does not specify how many LEDs are on each individual segment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gy-card\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/4353\/0021\/files\/4C-LB5508-HR.jpg?v=1789886876\" alt=\"TCL 55S425 replacement LED backlight connector and strip interface reference photo\" loading=\"lazy\" decoding=\"async\"\u003e\n\u003ch3\u003eConnector Interface\u003c\/h3\u003e\n\u003cp\u003eInspect the original electrical connector, contact orientation and A\/B arrangement. Match the physical strip markings and connector style before connecting the replacement; a similar-looking part number alone is not enough.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gy-card\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/4353\/0021\/files\/4C-LB5507-HR02J_d5e15ea0-c02f-4d7b-917d-43408c3c2be0.jpg?v=1789886876\" alt=\"TCL 55-inch backlight strip mounting holes and aluminum backing reference photo\" loading=\"lazy\" decoding=\"async\"\u003e\n\u003ch3\u003eBacking and Mounting\u003c\/h3\u003e\n\u003cp\u003eThe supplied product description calls out aluminum backing for fastening and heat transfer. Confirm the original 1,013 mm A+B layout and mounting positions to avoid stressing the LED panel during installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"gy-block\"\u003e\n\u003ch2\u003eTCL TV Has Sound but No Picture? Check the Backlight\u003c\/h2\u003e\n\u003cp\u003eIf your TCL TV has sound but a black screen, failed LED backlighting is one possible cause. With the TV powered on, shine a flashlight at an angle toward the screen. A faint image may suggest that the picture is being produced without enough backlight illumination. This is only a preliminary check; the LED driver, power supply or other components may also need diagnosis.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/guuyebe.com\/blogs\/tv-issues\/tv-has-sound-but-no-picture\"\u003eTV Has Sound But No Picture — Diagnosis Guide\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/guuyebe.com\/blogs\/news\/replacement-tv-light-strip-using-tv-model-ua55ju5920jxxz-as-an-example\"\u003eHow to Replace TV LED Backlight Strips — General Replacement Guide\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"gy-block\"\u003e\n\u003ch2\u003eTV LED Backlight Strip Replacement Process Video\u003c\/h2\u003e\n\u003cp class=\"gy-muted\"\u003eThis general replacement demonstration is retained from the GuuYebe template. It is not a model-specific TCL 55S421, 55S423 or 55S425 installation video. Disassembly exposes fragile glass and electrical hazards; unplug the TV and use appropriate repair procedures.\u003c\/p\u003e\n\u003cvideo controls=\"controls\" playsinline=\"\" poster=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/4353\/0021\/files\/GuuYebe_Video_Photo.jpg?v=1789183869\" preload=\"none\"\u003e\u003csource src=\"https:\/\/cdn.shopify.com\/videos\/c\/o\/v\/0d0e812417404634a02ef8e0deef5f9d.mp4\" type=\"video\/mp4\"\u003eYour browser does not support HTML5 video.\u003c\/source\u003e\u003c\/video\u003e\u003c\/section\u003e\n\u003c\/div\u003e","brand":"GuuYebe","offers":[{"title":"Default Title","offer_id":47183090549029,"sku":"100822","price":28.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0778\/4353\/0021\/files\/4C-LB5508-HR02J.jpg?v=1697621048","url":"https:\/\/guuyebe.com\/products\/tcl-sj-sb-d5500801-led-backlight-strips","provider":"GuuYebe","version":"1.0","type":"link"}