Question about Memorex MVUC821 8 in. Under Cabinet TV

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The red standby light comes on but,when I push the power button,and the unit will not turn on.

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

SOURCE: NOTHING WORKS ON DVD PLAYER

My daughters had the same problem, try replacing C411 (I think that was the number on the board), its a 10V 1000uf capacitor in what appears to be the 5V power supply section toward the right rear of the main board, that fixed it. On hers the capacitor was swelled up on the end. I checked it out of the circuit and the DVM I used only indicated it had about 500uf capacity.

Posted on Sep 26, 2007

jdvillanueva
  • 2098 Answers

SOURCE: When I plug the tv

Hi,
This kind of symptoms indicated of malfunction in the inverter circuitry inside the TV. It gone to overload due to the following reasons.
1. Busted bulb - If one of the bulb was already busted, the inverter gone to overload and the feedback circuitry will turn off the power supply to avoid further damaged. It can't be test by the multimeter but has a physical indication of fault like blackened end.
2. Faulty inverter circuitry - Once this circuitry gone bad same symptoms will be encountered. This was caused by shorted secondary high voltage transformer, driver transistor, open fusible resistor.
The unit must be take apart if not under warranty to check the bulb, and troubleshoot the inverter circuitry to determine where the fault came from.

If you don't have necessary tools and test instrument and can't troubleshoot the unit yourself, I would advice you to look for a professional to isolate the problem.

Also, check if your unit is still under warranty/extended warranty period, avail it because the manufacturer will fix it for free. Opening the back cover will void the warranty.

Hope I helped you.

Have a nice day!

Thanks for using Fixya.

Posted on Jun 13, 2011

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