When turning on my Sony Trinitron only the standby light comes on without a picture. Is there a "switch" problem? It was purchased in 2003. Time for a new Tv? I've tried using the remove and manually turning it on with the TV button. Nothing. It makes a sound as if it is going to turn on, but nothing appears on the screen. I've called my cable people and they said it seems to be a TV problem, not a cable problem.
Do the obvious first, and pull the board out and check all your solder grounds...especially on the verticall IC. And check the 200,250 volt 1Mf to 4.7Mf elctrolytic caps on the deflection part of the board. This is always a good jump to start the repair work. And leave the more complicated stuff for a TV tech.
My tv model sony trinitron KV2192M3 suddenly turned off and remained with a hissing sound.I then replaced FBT and the problem seems to be solved but after one month same problem occured, this time it was not FBT but i noticed protection fuse N25 from B+ and fusable resistor near fly back which is connected to 200v supply to G1 control grid is blown off.
After replacing these fuses FBT tuned on but there was excessive brightness on the tv screen with sound ok and after little while tv turned off.Now the tv can be switched on but it automatically switch off after screen getting too much brightness and so.
I suspected the problem is with the AFC cct which is included in the ic CXA 1213BS so i replaced it.Problem still remains i checked G1 voltage it is ok.The sub brt system and remained components seems to be fine.
I cannot solve this problem with my limited knowledge so i kindly request someone to give me some advises what to do next...
Looking forward Thank u.
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