{"id":8042981195845,"title":"Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V","handle":"multipurpose-tester-for-led-tv-backlight-and-constant-current-driver-board-used-in-all-led-lights-repair-output-0-330v","description":"\u003ch3\u003eMultipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V\u003c\/h3\u003e\r\n\u003cp id=\"b\"\u003eProduct model: KT4H Vin: AC 85-265V Vout: DC 0-330V (Automatic + Adjustable)\r\nVoltmeter Accuracy: \u0026lt;(± 0.5 ± 1%Vout) V Iout: 0-150mA (Automatic + Adjustable)\r\nConstant Current Board Testing Current: 0-999mA Ammeter Accuracy: \u0026lt;(±2\r\n±1%Iout) mA Pinput: 50VA (MAX) Temperature: -20℃~+40℃ TESTING METHODS Default\r\nfactory setting: Output Voltage 330V, Output Current 50mA. You can testing the\r\nbacklight of TV with any size at this default settings. 1. Self-testing: Plug\r\nin, turn the power switch on. The voltage is around 330V, current is 0;\r\nContact the probes together, voltage changes to 0 and current changes to\r\naround 50mA, then testing can be started. 2. In testing: Voltage = ‘0’, SHORT\r\nCIRCUIT. Voltage = ‘330V’, OPEN CIRCUIT. 3. Testing single LED bead (Set\r\nvoltage around to 20V and the current switch to 1mA): A. With right polarity:\r\nthe voltage shows on the tester of a normal LED bead is about 80% of the rated\r\nvoltage, for example, the operating voltage of the LED bead is 2.4V if its\r\nrated voltage is 3V; B. With wrong polarity: Voltage display the open circuit\r\nvoltage. 4. Testing LED strips: Set the voltage to around 200V, change the\r\ncurrent if need adjust brightness. Test method of Constant Current Driver\r\nBoard Testing situation: the LED strip of backlight is on with the tester, but\r\nit does not work with the constant current board; A. Cut off the power of TV,\r\nunplug the interface sockets of the constant current plate and light bar; B.\r\nConnect the constant current board with the tester using the cables in the\r\nkits on right polarity. C. Insert the Red and Black pens of the tester into\r\nthe anode and cathode of the interface of the LED light bar D. Turn the power\r\nof TV on. E. Testing voltage \u0026gt;30V, Current \u0026gt;30mA and keep stable, and the LED\r\nstrip working normal, then the Constant current board is normal.\u003c\/p\u003e \r\n\r\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\r\n \u003cul class=\"a\"\u003e\r\n \u003cli\u003eReal-time testing voltage and current of constant current drive board.\u003c\/li\u003e\r\n \u003cli\u003eTesting LED strips, LED panels, single LED bead, COB lighting sources, backlight of LED TV, displays, computers and so on.\u003c\/li\u003e\r\n \u003cli\u003eTesting voltage parameter of various of electronic components;Testing LED light on vehicle.\u003c\/li\u003e\r\n \u003cli\u003eNo burn out when testing single LED bead with wrong polarity. (Set voltage around to 20V and the current switch to 1mA)\u003c\/li\u003e\r\n \u003cli\u003eCompatible with all the LED strips (high voltage or low voltage). Manual adjusting the range of testing voltage (20-330V\/DC) and current (20-150mA).\u003c\/li\u003e\r\n \u003c\/ul\u003e","published_at":"2026-04-09T02:27:41+10:00","created_at":"2026-04-09T02:27:36+10:00","vendor":"SID LED","type":"Multi Testers","tags":["health_selected_Apr2026"],"price":22200,"price_min":22200,"price_max":22200,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":44855520264261,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"B07MT87G2P","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V","public_title":null,"options":["Default Title"],"price":22200,"weight":422,"compare_at_price":null,"inventory_management":"shopify","barcode":"613739727430","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/beesactive.com\/cdn\/shop\/files\/B07MT87G2P.jpg?v=1775764619","\/\/beesactive.com\/cdn\/shop\/files\/51V5DiSmF_L_6ff91e91-d51b-440c-8fb9-77ad9dcc1af6.jpg?v=1775665660","\/\/beesactive.com\/cdn\/shop\/files\/616nGVpbpcL_cf21af0e-60e7-4159-8b62-be03fc608156.jpg?v=1775665658","\/\/beesactive.com\/cdn\/shop\/files\/41RmoB0d8dL.jpg?v=1775665659","\/\/beesactive.com\/cdn\/shop\/files\/61qvhig--EL.jpg?v=1775665659","\/\/beesactive.com\/cdn\/shop\/files\/61lPld9En8L.jpg?v=1775665659","\/\/beesactive.com\/cdn\/shop\/files\/710USgtNcSL.jpg?v=1775665659","\/\/beesactive.com\/cdn\/shop\/files\/51N2mQ2ED2L.jpg?v=1775665659","\/\/beesactive.com\/cdn\/shop\/files\/51JuuOk37_L.jpg?v=1775665659"],"featured_image":"\/\/beesactive.com\/cdn\/shop\/files\/B07MT87G2P.jpg?v=1775764619","options":["Title"],"media":[{"alt":"Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V - 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You can testing the\r\nbacklight of TV with any size at this default settings. 1. Self-testing: Plug\r\nin, turn the power switch on. The voltage is around 330V, current is 0;\r\nContact the probes together, voltage changes to 0 and current changes to\r\naround 50mA, then testing can be started. 2. In testing: Voltage = ‘0’, SHORT\r\nCIRCUIT. Voltage = ‘330V’, OPEN CIRCUIT. 3. Testing single LED bead (Set\r\nvoltage around to 20V and the current switch to 1mA): A. With right polarity:\r\nthe voltage shows on the tester of a normal LED bead is about 80% of the rated\r\nvoltage, for example, the operating voltage of the LED bead is 2.4V if its\r\nrated voltage is 3V; B. With wrong polarity: Voltage display the open circuit\r\nvoltage. 4. Testing LED strips: Set the voltage to around 200V, change the\r\ncurrent if need adjust brightness. Test method of Constant Current Driver\r\nBoard Testing situation: the LED strip of backlight is on with the tester, but\r\nit does not work with the constant current board; A. Cut off the power of TV,\r\nunplug the interface sockets of the constant current plate and light bar; B.\r\nConnect the constant current board with the tester using the cables in the\r\nkits on right polarity. C. Insert the Red and Black pens of the tester into\r\nthe anode and cathode of the interface of the LED light bar D. Turn the power\r\nof TV on. E. Testing voltage \u0026gt;30V, Current \u0026gt;30mA and keep stable, and the LED\r\nstrip working normal, then the Constant current board is normal.\u003c\/p\u003e \r\n\r\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\r\n \u003cul class=\"a\"\u003e\r\n \u003cli\u003eReal-time testing voltage and current of constant current drive board.\u003c\/li\u003e\r\n \u003cli\u003eTesting LED strips, LED panels, single LED bead, COB lighting sources, backlight of LED TV, displays, computers and so on.\u003c\/li\u003e\r\n \u003cli\u003eTesting voltage parameter of various of electronic components;Testing LED light on vehicle.\u003c\/li\u003e\r\n \u003cli\u003eNo burn out when testing single LED bead with wrong polarity. (Set voltage around to 20V and the current switch to 1mA)\u003c\/li\u003e\r\n \u003cli\u003eCompatible with all the LED strips (high voltage or low voltage). Manual adjusting the range of testing voltage (20-330V\/DC) and current (20-150mA).\u003c\/li\u003e\r\n \u003c\/ul\u003e"}