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Vintage Pioneer CT-A7 (1984) Repair & Service 

Oerg866
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Опубликовано:

 

11 апр 2019

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Комментарии    
@VintageAudioTech
@VintageAudioTech Месяц назад
Really enjoyed the video!
@nedaradeva188
@nedaradeva188 2 года назад
GREAT VIDEO, Thank you so much.
@marlenestockton2269
@marlenestockton2269 2 года назад
The bigger problem and goes right back to the 'I don't care', repairman. Far far to many are either clueless, lazy, or a lack of knowledge, and can't or won't do a good job. You simply can't get good service in the USA. The horror stories we could tell you. Me and my family have given up on American repair shops...period.
@mwinters714
@mwinters714 3 года назад
Thank you for the detail lining up the gears. I could not find that info anywhere else.
@MichaelHuth
@MichaelHuth 5 лет назад
That's how it's done !
@fredrikbarthel4803
@fredrikbarthel4803 5 лет назад
Thank You! 2 working CT-A7's
@bigevilcorporation7050
@bigevilcorporation7050 5 лет назад
Mercy at 13:22
@Oerg866
@Oerg866 5 лет назад
14:51 on my phone too and 18:28 you can see the packaging of the nendoroid Mercy on the top right corner and a "heroes never die" shirt on the top left side :D she makes sure I don't screw up :)
@bigevilcorporation7050
@bigevilcorporation7050 5 лет назад
@@Oerg866 I'll get you a photo of our collection on discord later ;)
@leszekalbin4097
@leszekalbin4097 3 года назад
Man, buy a good camera because the subject is interesting and you can't see anything!
@Oerg866
@Oerg866 3 года назад
are you gonna finance it? :)
@leszekalbin4097
@leszekalbin4097 3 года назад
@@Oerg866 Do you repair expensive audio classics and you cannot afford a good camera? Use your talent and you will be able to afford it!
@cseresznyessandor237
@cseresznyessandor237 3 года назад
NICE JOB!
@BABYGODZILLA2009
@BABYGODZILLA2009 3 года назад
Hi Oreg866, I have a question for you. I recently acquired a Sony TC-K909ES 3 head cassette deck. When I record a cassette and play it on another deck, it sounds amazing, the bias, the treble and the bass is spot on. However, when i play the same cassette on the K909 or any other pre-recorded cassette, it sounds like the treble is all the way down. Very less treble. I checked everything I could think of, cleaned the heads (heads looks like new), checked the azimuth, tape paths, even replaced all the electrolytic caps in the unit. Nothing has changed. I even downloaded the service manual and i traced the path for the playback head. The pre-amp on this play back section uses a Mitsubishi IC 5220 (8pin) which is located right next to the playback head socked to the board. While playing back, when i place my finger near the IC or the socket, sort of a interference happens and i can hear the playback with the spot on treble. Might be just the interference causing it. Could this IC be defected and causing it to have low treble while playing back? Thought of changing the IC, would really like your input on this. Can a defected OpAmp IC cause it to have low treble? or high frequencies? I even unplug the play back head and plugged in the record head to the playback socket, level becomes really low but the same thing, no treble. So cannot be the head. As I said, OpAmp uses 3 electrolytic caps 220uF 50V which I have replaced. I believe the problem lies on the OpAmp somewhere. Please help my friend. I really need to get this fixed.
@Oerg866
@Oerg866 3 года назад
Hi. Feed white noise into the opamp from an external source and check what comes out to make sure it's not a defective playback head.
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