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Sony TV just quit

 
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Bill
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PostPosted: Mon Sep 20, 2004 3:55 pm    Post subject: Sony TV just quit Reply with quote

27" Sony Trinitron TV just quit. It will not turn on by the remote or on set button. Have confirmed power is going to the set and the fuse inside the case where the power cord connects appears good. Checked the voltage at the fuse holder without the fuse installed and got 118V on my meter.

Any suggestions or do I trash it?


Bill
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voivoda



Joined: 23 Jun 2004
Posts: 63

PostPosted: Thu Sep 23, 2004 7:50 am    Post subject: check output Reply with quote

check output voltages on other side of the power block
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Bill
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PostPosted: Sun Oct 17, 2004 8:39 am    Post subject: Reply with quote

Check if you have 340Vdc across the big capacitor. It is just rectified ac. Maybe it will be more like 150Vdc if your supply is 120Vac.
Then check if you have about 100Vdc across the next biggest capacitor (B+ voltage)
If all is well, check the voltage across the Horizontal Output Transistor.
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Mel
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PostPosted: Sun Oct 17, 2004 8:56 pm    Post subject: Reply with quote

Is the standby light flashing and if so how many times. This is a diagnostic tool built into Sony TVs and will help isolate your problem. Meanwhile, you might want to check into www.FreeFlatScreens.com/default.aspx?referer=7509165 for an opportunity to earn a free replacement for this set with a little effort on your part.
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PostPosted: Fri Nov 05, 2004 6:52 pm    Post subject: Reply with quote

the problem is poer supply..........it is called smps power supply ...may be the transistor in smps is bad or any other components in power supply... or the horizondal transistor is bad the pwer supply will shut down.... any way dont buy any sony products .....its alll inferior quality... iam a service technitian
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