Question about Sansui HDPDP4200 42 in. HD-Ready Plasma Television

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Power supply functional but there is no sound and pictures.

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The main digital board need to be checked. Contact any service technician.

Posted on Jul 29, 2013

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1 Answer

My TV still turns on and off, but there's no picture or sound. How do I fix it?


The modern TV has two power supply sections. The first is a low voltage +_5 V, very low energy consumption, to keep the remote control functions live. The main power supply seemed to have failed and could be very difficult to fix as it is a energy efficient switch mode supply. Normally the switching transistor or MOSFET fails first and the blows a fuse. Depending on the root cause, replacing these could restore its function.

Nov 18, 2015 | Televison & Video

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JVC LT40A320 turns on but no picture. Replaced Power Supply & Backlight Inverter (TV was hit by a lightning surge, would not do anything at first) now the green light comes on but no picture or sound.


Since your TV was struck by lighting, the power supply is the first board that gets affected by the sudden change in AC power.. The main board is the next board due to the fragile components and the excess of voltage that is supplied to it when the lighting happened. Since you have replaced the power supply already.. I would suggest to replace the main board and that should restore the functionality on your TV.

Sep 04, 2015 | JVC Televison & Video

1 Answer

We have no picture or sound


Sounds like your power supply. ElectroRepairShop has one that may match. INSIGNIA NSLCD32F PSM210 417A POWER SUPPLY

Feb 28, 2015 | Insignia IS-LCDTV32 32 in. Television

1 Answer

New power supply board and screen goes black


It sounds that the off timer has been set to one hour. Check it.

May 29, 2013 | Philips 47PFL3704D 47 in. LCD TV

1 Answer

Replace the power supply and the backlight inverter to my samsung has sound but no pictuer can u help


Check whether CCFL lamps are good or not. Check whether the newly replaced back-light inverter functions well.

Jan 23, 2013 | Samsung LN-T4665F 46 in. LCD Television

1 Answer

The TV has no picture or sound but the red light on the front comes on?


The red light on the front is part of the system control (computer) in your television it indicates likely your power supply and computer are functioning. There are a multitude of problems that can cause no picture and no sound. Power supply troubles are most likely. The system control will have it's own little power supply which is always on so it can listen to the front panel or your remote. It will continue to operate when the heavy duty power supply might not. This suggests a shop repair would be in order. House calls can't fix something like this unless they are VERY lucky and find something obvious. You will still pay for the house call even if they can't fix it.

Mar 31, 2010 | Hitachi 51F59 51" HDTV Projection...

1 Answer

There is no picture just sound.


Take a flash light and shine it from he back of the unit to see if a picture is actually present. If you see a picture in the background then the lamps are not being lit by the inverter board, Replacing the inverter board will solve the problem. Also have the voltage from the power supply to the inverter checked to make sure the power supply is functioning correctly.

Mar 03, 2010 | Televison & Video

1 Answer

Phillips LCD TV - sound but no picture


You probably have a bad inverter board or possibly power supply. Both can cause this problem.

Oct 12, 2009 | Televison & Video

2 Answers

Hitachi 55" Plasma HDTV, 1 yr old, suddenly lost picture and sound, but power light still on.


It sounds like a shutdown circuit is being activated. This is normal in cases where the power supply id drawing excessive current. I would suggest that you get this looked at by a qualified professional. This is because this problem may be in the power supply and the voltages can get dangerous in this section of the TV set.

In any event if this is a power supply problem chances are the technician will just have to replace the power supply. Which should cost from 150-250 dollars.

I hope this helps

Shuttle83

Jul 14, 2008 | Hitachi 55HDS69 55 in. Plasma Television

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