I have a TCL TV and the screen went black. I am pretty sure it's the main board and 2 voltage regulators on the board. How do I read the numbers on top of a TV main board voltage regulators.

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clean the laser lens do no use a lens cleaner disc you need to dismantle the drive unit and clean lens with cotton bud and a isoproplyn solution also clean the disc turnble and clamp if possible get it done by somebody who knows what they are doing

SOURCE: black screen on vizio

it may be the inverter part.

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I WANT THE SERVICE MODE CODE FOR MODEL NO: DP21E101 TCL TV 21"

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This could be a backlight issue, an inverter issue or a logic board issue. Look at the screen closely, if there is a faint image it's either a backlight issue or inverter issue. To weed out between the two you can just order on inverter, they're 20 bucks on ebay, if that doesn't work, replace the backlight. Maybe the new screen was not wrapped right when it was shipped, that can easily break the backlight bulb. make sure you connected the inverter to the white and pink wires correctly. Backlight repairs are somewhat difficult. As much as I would like to be able to tell you a quickfix that will solve backlight the problem, it's a pretty arduous repair that requires 1-2 hours for a trained person. It's feasible to do it yourself if you're tech savy, but you'll most likely have to google for guides that show you exactly how to replace the backlight step by step. I work for Mac Repair NYC and i have to fix this problem a lot, it's so easy to break the lightbulb in the process.

SOURCE: I have a Polaroid 42" TLX-04244B. When turning the

The Inverter is trying to produce the high voltage to light the backlight. It looks like it cannot hold the charge to maintain the high voltage level in order for it to stay on - you get a momentary display at initial power-up thus see the logo. Replace the Inverter board.