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Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc.

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Old 16th Aug 2023, 4:32 pm   #1
Bartoloni
Diode
 
Join Date: Aug 2023
Location: Torino, Italy.
Posts: 2
Default Panasonic AG-7350 and high pitch noise

Hi to everyone, I just bought a Panasonic Ag7350 unit, this was not working (counter not moving) noise on screen etc.. etc...
First I replaced all capacitors on Servo board, and this make the counter working again, after that I manually aligned the tape reaching a nice quality.

There is still a repetitive noise for the first 1 minute, every 8 seconds. (that can be related to other electrolytic capacitors), but... after 1 minute I was able to see a perfect image...but audio is noisy (I also removed, cleaned and aligned to have a perfect stereo sound the audio heard)

There is something like a high pitch noise (that can be reduced activating the DOLBY ) but still too high.

Can anyone point me on the right direction? Can be something to be adjusted on the two audio cards?

Very thank you to all!
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Old 17th Aug 2023, 1:59 pm   #2
Bartoloni
Diode
 
Join Date: Aug 2023
Location: Torino, Italy.
Posts: 2
Default Re: Panasonic AG-7350 and high pitch noise

Just to keep you updated, the one minute noise was solved by replacing C1 and C3 on servo the board... I found also that HIFI sound (when there is) has not got this high pitch/static noise on it.
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