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Anonymous Poster #1

Please Can Someone Help with Troubleshoot Hit

01/15/2013 1:35 PM

I had a problem with sony digital tv generic with a cct board similar to that of universal board. after a strong surge it`s power supply blown i managed to repair the power supply and am able to get all the required dc voltages, the remote LED is glowing when you power it but the system has refused to switch on.can some one help me with further trouble shoot hints.
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JPool
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Engineering Fields - Mechanical Engineering - New Member Fans of Old Computers - TRS-80 - New Member Popular Science - Weaponology - New Member Safety - Hazmat - New Member Hobbies - Fishing - Fish On! United States - Member - New Member

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#1

Re: Please Can Someone Help with Troubleshoot Hit

01/15/2013 3:11 PM

You don't think a strong surge only took out the power supply, do you? I would check any capacitors on the boards.

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charles caroly
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Join Date: Dec 2012
Location: kampala uganda, work with alam group of companies,sugar and allied industries ltd as electrical engineer.
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#2
In reply to #1

Re: Please Can Someone Help with Troubleshoot Hit

01/16/2013 7:31 AM

I have checked all the capacitors ok, all the voltages ok, further i have removed vertical sweep cct, thinking may be it would be faulty but still no success. the HT cable to cathode tube is giving just small click as if it switching but can not display any light in the screen on disconnection from the tube the charges are present please help.H-pulse tr. tested ok.
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JPool
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Engineering Fields - Mechanical Engineering - New Member Fans of Old Computers - TRS-80 - New Member Popular Science - Weaponology - New Member Safety - Hazmat - New Member Hobbies - Fishing - Fish On! United States - Member - New Member

Join Date: Apr 2012
Location: Detroit MI, USA
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#3
In reply to #2

Re: Please Can Someone Help with Troubleshoot Hit

01/16/2013 7:36 AM

Can you test the CRT?

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 How we deal with death is at least as important as how we deal with life. --CAPTAIN KIRK, Star Trek II: The Wrath of Khan
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gmphadte
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Join Date: Nov 2012
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#4

Re: Please Can Someone Help with Troubleshoot Hit

01/21/2013 1:56 AM

Check whether any copper tracks has burnt.

Gajanan Phadte
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