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My 55" proscan picture will come on for a few seconds then turns off but I still have sound

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Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Posted on Apr 24, 2017

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Proscan 55" TV flashes 3 or 4 times after turned on then says "no signal." After turning off and back on again it starts normal with picture. What causes this?


Tuner AGC voltage deviates. Contact any service technician. This fault can't be set right by a normal user. If you wish to get some details; visit the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/

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1 Answer

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1 Answer

I have a 55 inch floor modelmy granddaughter push a button on the front and we dont know which one and there is now no picture but i have sound and can change the channel//we can hear the tv just no...


Look for a button on the TV that says 'source'. Push it and wait for a few seconds, if the picture does not come back, push it again and wait a few more seconds. Do this until you have cycled through all of the input sources for your TV.

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1 Answer

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I have a 60in Proscan Projection TV. My picture is out and the TV only beeps.

Brian Allen

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1 Answer

Same problem: picture goes out


Sounds like you need to replace the lamp. The owners manual should show you how to replace the lamp. You can order the lamp through Sony on their website. Good Luck

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