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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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Amplifier
Hi!
I got an old SONY amplifier where the right channel seems to be defective. When I turn the balance to the right speaker, the volume gets lower and low frequencies are missing completely. I am really not sure, where I should start searching for the error. First I tried another pair of speakers, but this was not the cause. Can anyone tell me where I should start searching for the error? Can anyone tell me what the integrated preamp (I found this on the schematics) is good for? Thank you, arvid puschnig |
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Amplifier
"Arvid Puschnig" wrote in message
t... Hi! I got an old SONY amplifier where the right channel seems to be defective. When I turn the balance to the right speaker, the volume gets lower and low frequencies are missing completely. I am really not sure, where I should start searching for the error. First I tried another pair of speakers, but this was not the cause. Can anyone tell me where I should start searching for the error? Can anyone tell me what the integrated preamp (I found this on the schematics) is good for? Thank you, arvid puschnig First, tell us how much you know about electronics and troubleshooting electronic circuits. If the answer to both questions is "nothing" or "very little", then the best course of action for you, to minimize the repair expense, is to take the unit to a repair shop and have them look it over. If you have no electronics training or experience, then you risk causing much more damage than the amp already has. To get a more direct response, you should always post the make and model number of any equipment or component for which you're seeking information or help. Cheers!!! -- Tweetldee Tweetldee at att dot net (Just subsitute the appropriate characters in the address) Time is what keeps everything from happening all at once. |
#3
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Amplifier
"Tweetldee" wrote: First, tell us how much you know about electronics and troubleshooting electronic circuits. I got an education in communication electronics where I got the basics in electronic. Most of the the time we worked on microcontrollers. Unfortunately I just got a little theory in analog devices, like audio amps, so I would be very pleased if someone could give me some hints. If the answer to both questions is "nothing" or "very little", then the best course of action for you, to minimize the repair expense, is to take the unit to a repair shop and have them look it over. If you have no electronics training or experience, then you risk causing much more damage than the amp already has. I think I can do it with a little guiding... To get a more direct response, you should always post the make and model number of any equipment or component for which you're seeking information or help. It's the SONY TA-AV501R. Perhaps I can put the schematics of the power board on an ftp-site if this would help. Cheers!!! Cheers,too! arvid |
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