My 9 yr. old unit screen went black. I have sound by no picture. I'm a newbie at TV repair but I build my own computers. I've unplugged the unit to do a hard reset. I want to know if it's a simple fix by replacing a module or something or is it complicated. I don't hear any sizzle sound or clicks when I turn the T.V. on. There are no lines or light coming from the screen.
you may have a bad flyback transformer, try to resolder it's pins and also resolder the hot,and drive tranformer t501,and all around the hv circuit,and resolder vert IC tda8172 and r536 .47ohms, also turn up g2 on the back of the fly if you get the pic with retrace lines check D777.
On 2007-10-13 17:10, Ra wrote: you may have a bad flyback transformer, try to resolder it's pins and also resolder the hot,and drive tranformer t501,and all around the hv circuit,and resolder vert IC tda8172 and r536 .47ohms, also turn up g2 on the back of the fly if you get the pic with retrace lines check D777.
Thanks for the reply. I was wondering if I was holding my mouth right or something, since it to awhile to get a response . I have no idea where these components are in the TV. Is there a place you know of where I can order or preferable download the schematic for the TV. Is this something a newbie can do or should I take it to a repair shop? Do you have an estimate of the cost or man hours to perform the repair? Thank you so much in advance.
I have a KV-32S45, manufactured in 1998. Exact same problem. When I push the power button, there is an audible click, the red standby light begins to blink, and no picture whatsoever. I've watched the light to see if there was a pattern and counted up to about 50 blinks that all occurred regularly, without any variation between them, so I figue there is no specific code being put out by this thing. I've pulled the back cover off and the fuse on the circuit board where the power cord runs in is fine (hasn't been burned out). I can't see any other visible burned components either.
Have purchased a service manual for this model, but it doesn't seem to be terribly helpful.
Would it be correct that Ra's advice would hold true for my TV as well?
Also, FreeWilly, I can send you the service manual if you like, it will work for your TV as well. It's about 10 MB though.
when one say - No reply from the jungle IC301 (data bus is busy, shorted to ground, or held high), IK video path is defective. It does't mean you have to replace the ic right away, you have to troubleshoot the circuit itself,if you don't know than take the set to some one that knows.
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