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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Zenith TV model B25A24Z no sound
This set has no audio from the speakers or the variable output jack in
the back. I tried full volume and still heard nothing. I checked the menu to be certain stereo, SAP., surround, mute, etc were all where they should be. The thing I did notice was a slight barely audible "thump" noticeable when switching the speakers on through the menu. So although I didn't fully investigate it I suspect that the output is good. I didn't try any signal injection yet but without a schematic this is a bit difficult. Does anyone have any information on this model having these symptoms or could you perhaps point me in the right direction? Thanks in advance for any assistance. Lenny Stein, Barlen Electronics. |
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Zenith TV model B25A24Z no sound
I would not be able to tell you specifics, but I would do the procedure of tracing the signal from the sound detector though to the processor section. A component most likely failed along that path. The audio amp itself is most likely working, because you heard a thump. Unless you are equipped and trained in TV service, I would suggest you call a service centre that services Zenith TV sets. -- Greetings, Jerry Greenberg GLG Technologies GLG ========================================= WebPage http://www.zoom-one.com Electronics http://www.zoom-one.com/electron.htm ========================================= "Lenny" wrote in message om... This set has no audio from the speakers or the variable output jack in the back. I tried full volume and still heard nothing. I checked the menu to be certain stereo, SAP., surround, mute, etc were all where they should be. The thing I did notice was a slight barely audible "thump" noticeable when switching the speakers on through the menu. So although I didn't fully investigate it I suspect that the output is good. I didn't try any signal injection yet but without a schematic this is a bit difficult. Does anyone have any information on this model having these symptoms or could you perhaps point me in the right direction? Thanks in advance for any assistance. Lenny Stein, Barlen Electronics. |
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