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SHARP TV SET

The TV picture became about 5 cm less then normal on the top and 2 cm on the right side of screen. It became gradually. Looks like some kind of capasitor has been loosing its capasity. TV set SHARP 70GS-64SC quite old but the pcture is OK, without the problem discribed here above.

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Check the power supply circuit. Typical voltage at B+ is 105V. Chances are that it is much lower. Check (as you say), capacitors on the primary circuit of the SMPS. Better still, replace all low voltage capacitors within the power supply.

Posted on Jan 21, 2008

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Posted on Jan 02, 2017

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so its probably the light engine. you need to change it!

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My 32-inch lcd tv from sharp has no picture but audio works fine. No picture ever comes up, not even the "please wait" message. Whats going on?


My 3 year old Sharp LC-40C32U would start up fine but within a minute would go dark (audio continued fine). For a while I could turn the set off and on again and it would be fine, but over time this became less effective. My solution, which has worked for a week now, was to a) unplug the set's power cord; b) after 3 minutes plug it back in and turn the set on; c) on the remote hit MENU and slide over to SETUP (3 clicks to the right if the screen is dark) and one up to RESET; d) hit ENTER and follow the prompts. This puts the set in it's factory configuration so you will have to rescan for channels. Worked for me.

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Projection TV sets have two very common problems listed below.

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These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith and others.
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Hello buddylaw,

Can you post a picture of the TV screen with the problem? It will help in the diagnoses. It looks like you may have a thermal sensitive component causing this issue. But I will have to seen a picture of the screen to properly diagnose this problem as to the possible section that may be causing this problem.

Thank you.
Shuttle83

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