{"product_id":"tcl-4c-lb4321-hr-led-backlight-strips","title":"TCL 4C-LB4321-HR LED Backlight Strips for 43S431 43S435 43S434 43S433","description":"\u003cstyle\u003e\n\n.gy-desc-4clb4321hr{max-width:1100px;margin:0 auto;color:#24303a;font:inherit;line-height:1.6}\n.gy-desc-4clb4321hr *{box-sizing:border-box}\n.gy-desc-4clb4321hr h2{font-size:1.58em;line-height:1.28;margin:28px 0 13px;color:#172733}\n.gy-desc-4clb4321hr h3{font-size:1.25em;line-height:1.35;margin:16px 0 11px;color:#172733}\n.gy-desc-4clb4321hr h4{font-size:1.06em;line-height:1.4;margin:14px 0 9px;color:#24303a}\n.gy-desc-4clb4321hr p{margin:9px 0 13px}\n.gy-desc-4clb4321hr ul{padding-left:23px;margin:8px 0 15px}\n.gy-desc-4clb4321hr li{margin-bottom:6px}\n.gy-desc-4clb4321hr img{display:block;width:auto;max-width:100%;height:auto;margin:0 auto}\n.gy-desc-4clb4321hr a{color:#a42823;text-decoration:underline;text-underline-offset:2px}\n.gy-desc-4clb4321hr .gy-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:center}\n.gy-desc-4clb4321hr .gy-grid \u003e *{min-width:0}\n.gy-desc-4clb4321hr .gy-top,.gy-desc-4clb4321hr .gy-block{padding:18px 0;border-bottom:1px solid #e1e6e9}\n.gy-desc-4clb4321hr .gy-top{padding-top:4px}\n.gy-desc-4clb4321hr .gy-visual{padding:10px;text-align:center}\n.gy-desc-4clb4321hr .gy-kicker{letter-spacing:.06em;text-transform:uppercase;color:#556572;font-size:.83em;font-weight:700}\n.gy-desc-4clb4321hr .gy-note{background:#fff9ed;border-left:4px solid #dca139;padding:14px 18px;margin:18px 0;border-radius:3px}\n.gy-desc-4clb4321hr .gy-support{background:#f2f8f8;border:1px solid #d8e7e5;border-radius:7px;padding:18px 21px;margin:15px 0}\n.gy-desc-4clb4321hr .gy-muted{color:#586772}\n.gy-desc-4clb4321hr .gy-small{font-size:.84em;color:#586772}\n.gy-desc-4clb4321hr .gy-data{border-collapse:collapse;width:100%;font-size:.94em}\n.gy-desc-4clb4321hr .gy-data th,.gy-desc-4clb4321hr .gy-data td{padding:10px 11px;border-bottom:1px solid #e2e7ea;text-align:left;vertical-align:top;overflow-wrap:anywhere}\n.gy-desc-4clb4321hr .gy-data th{background:#f2f5f6;font-weight:600}\n.gy-desc-4clb4321hr .gy-spec th{width:39%}\n.gy-desc-4clb4321hr .gy-spec tr:nth-child(even) td{background:#fafbfc}\n.gy-desc-4clb4321hr .gy-model-group{border:1px solid #dae3e6;border-radius:6px;margin:9px 0;overflow:hidden}\n.gy-desc-4clb4321hr .gy-model-group summary{cursor:pointer;padding:13px 15px;font-weight:650;background:#f6f8f8;list-style-position:inside}\n.gy-desc-4clb4321hr .gy-model-group summary:hover{background:#edf3f3}\n.gy-desc-4clb4321hr .gy-count{float:right;font-weight:400;font-size:.9em;color:#5b6c77}\n.gy-desc-4clb4321hr .gy-scroll{overflow-x:auto}\n.gy-desc-4clb4321hr .gy-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}\n.gy-desc-4clb4321hr .gy-card{padding:12px 7px 10px;text-align:center}\n.gy-desc-4clb4321hr .gy-card h3{font-size:1.07em}\n.gy-desc-4clb4321hr .gy-card p{text-align:left}\n.gy-desc-4clb4321hr .gy-wide-img{margin:18px auto}\n.gy-desc-4clb4321hr video{display:block;width:100%;max-width:970px;height:auto;margin:15px auto;border-radius:6px}\n.gy-desc-4clb4321hr .gy-quick-models{background:#f3f6f8;padding:12px 15px;border-radius:5px}\n@media(max-width:720px){\n.gy-desc-4clb4321hr .gy-grid,.gy-desc-4clb4321hr .gy-cards{grid-template-columns:1fr;gap:11px}\n.gy-desc-4clb4321hr h2{font-size:1.38em}\n.gy-desc-4clb4321hr h3{font-size:1.15em}\n.gy-desc-4clb4321hr .gy-card{border-bottom:1px solid #e3e8e9}\n.gy-desc-4clb4321hr .gy-data th,.gy-desc-4clb4321hr .gy-data td{padding:9px 7px}\n.gy-desc-4clb4321hr .gy-model-group summary{padding:12px 10px}\n.gy-desc-4clb4321hr .gy-count{float:none;display:inline-block;margin-left:7px}\n}\n.gy-desc-4clb4321hr .gy-visual img{max-height:420px;object-fit:contain}\n.gy-desc-4clb4321hr .gy-smallprint{font-size:.88em;color:#586772}\n.gy-desc-4clb4321hr .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-4clb4321hr .gy-unboxing h3{margin:5px 0 11px}\n.gy-desc-4clb4321hr .gy-unboxing video{margin:13px auto}\n\n.gy-desc-4clb4321hr .gy-photo-label{font-size:.9em;text-align:center;color:#586772;margin:8px auto 0}\n.gy-desc-4clb4321hr .gy-intro-video{display:block;max-width:970px;margin:0 auto}\n.gy-desc-4clb4321hr .gy-models td:first-child{font-weight:600}\n.gy-desc-4clb4321hr .gy-data td{overflow-wrap:anywhere}\n.gy-desc-4clb4321hr .gy-video-fallback{font-size:.9em}\n.gy-desc-4clb4321hr .gy-unboxing video{background:#f2f5f6;aspect-ratio:16\/9;object-fit:contain}\n\n\n.gy-desc-4clb4321hr .gy-reference-figure{margin:16px auto 22px;}\n.gy-desc-4clb4321hr .gy-reference-figure img{width:100%;max-width:970px;height:auto;}\n.gy-desc-4clb4321hr .gy-model-group[open] summary{border-bottom:1px solid #dae3e6;}\n\u003c\/style\u003e\n\u003cdiv class=\"gy-desc-4clb4321hr\" lang=\"en-US\"\u003e\n\u003csection class=\"gy-top\"\u003e\n\u003ch2\u003e4C-LB4321-HR LED Backlight Strips for Select TCL 43-Inch TVs\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\/43S431.jpg?v=1789898446\" alt=\"GuuYebe 4C-LB4321-HR two-piece LED backlight strip replacement set for select TCL 43-inch TVs\" loading=\"eager\" decoding=\"async\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp class=\"gy-kicker\"\u003eGuuYebe TV LED backlight replacement\u003c\/p\u003e\n\u003ch3\u003eReplacement Strip Set for TCL 43S425, 43S431, 43S433, 43S434 and 43S435 References\u003c\/h3\u003e\n\u003cp\u003eThis GuuYebe LED backlight replacement set is listed for select TCL 43-inch LED\/LCD televisions using the 4C-LB4321-HR backlight reference. It contains two strips. Check your TV’s complete model and the markings on its original backlight assembly before purchasing: model-family names alone cannot confirm that the installed strips match.\u003c\/p\u003e\n\u003ch4\u003eProduct Information\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrip length:\u003c\/strong\u003e 812 mm per strip (as listed)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED count:\u003c\/strong\u003e 21 LED beads per strip (as listed)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage includes:\u003c\/strong\u003e 1 set of 2 LED backlight strips\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED voltage:\u003c\/strong\u003e Not specified in the supplied product information; verify against the original assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"gy-block\"\u003e\n\u003ch2\u003eCompatible TCL 43-Inch TV Model References\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 compatibility list includes the following TCL 43S425 variants and 43S431, 43S433, 43S434, and 43S435 models. Check the full model identifier on the TV label and, when practical, inspect the actual LED strips inside the TV before ordering.\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\u003e43S425LAAA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in source\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e43S425LDAA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in source\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e43S425TDAA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in source\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e43S431\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in source\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e43S433\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in source\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e43S434\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in source\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e43S435\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in source\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\/43S435.jpg?v=1789898447\" alt=\"4C-LB4321-HR reference image showing part markings for TCL 43-inch TV backlight replacement\" 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 the original strip’s printed code (4C-LB4321-HR, 4C-LB4321-HR03J, or related markings where applicable), its 812 mm length, 21-LED arrangement, connector, and mounting positions with the product images. The listed TV models are fitment references, not a guarantee that every production version uses the same LED strips.\u003c\/div\u003e\n\u003ch3\u003eComplete Known-Models List — 11 TCL Model Identifiers\u003c\/h3\u003e\n\u003cp\u003eThe following TV model identifiers are transcribed from the supplied fitment file. Expand a group to view every entry. “Not specified in source” means the file did not supply a separate version code, not that all production versions have been verified.\u003c\/p\u003e\n\u003cdetails class=\"gy-model-group\"\u003e\n\u003csummary\u003eTCL 43S425 variants \u003cspan class=\"gy-count\"\u003e7 models\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\u003e43S425LAAA\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in source\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e43S425LABA\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in source\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e43S425LBAA\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in source\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e43S425LDAA\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in source\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e43S425TDAA\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in source\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e43s425vdaa\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in source\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e43S425VDBA\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in source\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 43S43 models \u003cspan class=\"gy-count\"\u003e4 models\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\u003e43S431\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in source\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e43S433\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in source\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e43S434\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in source\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e43S435\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"gy-muted\"\u003eNot specified in source\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\u003eNeed help checking 4C-LB4321-HR compatibility? Email your TV’s complete model number and clear photos of the original strip markings, connector, LED layout, and mounting holes so we can help compare the supplied product references.\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 Replacement Part Number\u003c\/th\u003e\n\u003ctd\u003e4C-LB4321-HR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePart Type\u003c\/th\u003e\n\u003ctd\u003eLED backlight strips\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePart Usage\u003c\/th\u003e\n\u003ctd\u003eLED\/LCD television backlight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eStrip Length\u003c\/th\u003e\n\u003ctd\u003e812 mm per strip (as listed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLED Count\u003c\/th\u003e\n\u003ctd\u003e21 LED beads per strip (as listed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eIndividual LED Voltage\u003c\/th\u003e\n\u003ctd\u003eNot specified in the supplied product files\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePackage Contents\u003c\/th\u003e\n\u003ctd\u003e1 set: 2 LED backlight strips\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\"\u003eVisible \/ Board Markings\u003c\/th\u003e\n\u003ctd\u003e43HR330M21A0 V1\u003cbr\u003e4C-LB4321-HR03J\u003cbr\u003e43HR330M21A1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePanel References as Listed\u003c\/th\u003e\n\u003ctd\u003eLVU430NDEL\u003cbr\u003eLVU430NDEL MS9W04 V1\u003cbr\u003eLVU430NDEL MS9W13 V4\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\u003c\/div\u003e\n\u003cp class=\"gy-note\"\u003e\u003cstrong\u003eBefore ordering:\u003c\/strong\u003e 43HR330M21A0 V1, 4C-LB4321-HR03J, and 43HR330M21A1 are supplied as visible or board reference markings, while LVU430NDEL and its MS9W04 \/ MS9W13 variations are listed panel references. These codes are identification aids, not standalone proof of interchangeability. Check the original parts and physical layout.\u003c\/p\u003e\n\u003cfigure class=\"gy-reference-figure\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/4353\/0021\/files\/4C-LB4321-HR_43HR330M21A1_43S434_43S435_43S433_43S431.jpg?v=1749474378\" alt=\"4C-LB4321-HR product identification image for TCL 43-inch backlight replacement\" loading=\"lazy\" decoding=\"async\"\u003e\n\u003cfigcaption class=\"gy-photo-label\"\u003eProduct identification photo — compare part labels, strip profile, lens spacing, and mounting points with the original backlight assembly.\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"gy-reference-figure\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/4353\/0021\/files\/d49d04fd-433c-4596-9d77-b290b34454b2.__CR0_0_970_600_PT0_SX970_V1.jpg?v=1749474482\" alt=\"Additional 4C-LB4321-HR LED backlight strip reference image from the product listing\" loading=\"lazy\" decoding=\"async\"\u003e\n\u003cfigcaption class=\"gy-photo-label\"\u003eAdditional product reference image from the supplied listing.\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003csection class=\"gy-unboxing\"\u003e\n\u003ch3\u003e4C-LB4321-HR LED Backlight Strips Unboxing Video\u003c\/h3\u003e\n\u003cp\u003eView the supplied product video to compare the GuuYebe 4C-LB4321-HR backlight set with the parts removed from your TCL television. Check the strip shape, printed references, LED arrangement, and connector before installing.\u003c\/p\u003e\n\u003cvideo controls=\"controls\" playsinline=\"\" preload=\"none\" poster=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/4353\/0021\/files\/4C-LB4321-HR_43HR330M21A1_43S434_43S435_43S433_43S431.jpg?v=1749474378\"\u003e\u003csource src=\"https:\/\/cdn.shopify.com\/videos\/c\/o\/v\/941bde5c6a214c90b13de42c394c1e60.mp4\" type=\"video\/mp4\"\u003eYour browser does not support HTML5 video.\u003c\/source\u003e\u003c\/video\u003e\n\u003cp class=\"gy-small\"\u003eThis product video helps with visual identification; it does not guarantee compatibility with every version of a listed TV model.\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\/43S434.jpg?v=1789898447\" alt=\"4C-LB4321-HR LED backlight bead and optical lens reference photo\" loading=\"lazy\" decoding=\"async\"\u003e\n\u003ch3\u003eLED Beads and Optical Lenses\u003c\/h3\u003e\n\u003cp\u003eThe supplied listing specifies 21 LEDs per strip. Compare the LED count, lens spacing, and original strip dimensions; the individual LED voltage was not provided in the source documents.\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\/43S433.jpg?v=1789898447\" alt=\"4C-LB4321-HR backlight strip connector interface photo\" loading=\"lazy\" decoding=\"async\"\u003e\n\u003ch3\u003eConnector Interface\u003c\/h3\u003e\n\u003cp\u003eVerify the plug shape, orientation, and contact arrangement against the original strips. A similar-looking connector alone does not confirm that two backlight assemblies are interchangeable.\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\/43HR330M21A1_20bcf80f-3592-47a4-900f-838fb940f21b.jpg?v=1789898447\" alt=\"4C-LB4321-HR LED backlight strip backing and mounting-hole reference image\" loading=\"lazy\" decoding=\"async\"\u003e\n\u003ch3\u003eBacking and Mounting\u003c\/h3\u003e\n\u003cp\u003eThe supplied listing describes an aluminum strip backing for mounting and heat transfer. Check mounting-hole locations, overall length, and clearance against the original assembly before 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 plays sound but shows a dark screen, the LED backlight is one possible cause. With the TV on, shining a flashlight at an angle across the screen may reveal a faint image. A visible faint picture can suggest a backlight or its power circuitry needs diagnosis; it does not prove that the LED strips themselves have failed.\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 walkthrough is carried over from the supplied GuuYebe template. It is not a TCL 43S425-specific or 4C-LB4321-HR-specific installation video. Disconnect electrical power before disassembly and handle the fragile LCD panel and internal electronics carefully.\u003c\/p\u003e\n\u003cvideo controls=\"controls\" playsinline=\"\" preload=\"none\" poster=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/4353\/0021\/files\/GuuYebe_Video_Photo.jpg?v=1789183869\"\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":50580870627621,"sku":"103045","price":32.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0778\/4353\/0021\/files\/43S43143S43543S43443S433.jpg?v=1749474576","url":"https:\/\/guuyebe.com\/products\/tcl-4c-lb4321-hr-led-backlight-strips","provider":"GuuYebe","version":"1.0","type":"link"}