Technics RS 1700 R2R

Hi everyone

Can you advise me if it is correct?

photo number 1 .. dark blue capacitor like yours in the device. It is common and a suitable replacement is .. UPW Low Impedance ?

photo number 2 .. pale blue and purple... there are far fewer of them on the board, even in the device a suitable replacement is .. UKL Low Leakage ?

photo number 3.. small black capacitor a suitable replacement is Fine Audio or ?

Dark blue ones have an additional letter designation ODC
Pale blue violets have no additional letter designation
Small black capacitors have an additional letter designation ODA

because 40 years ago, the manufacturer installed different colors and sizes of capacitors, but both the first and second types are on one board and they have the same values.
Even the small black one has the same capacity value, but it has much smaller dimensions.
The value 10uF/16V is the same for all, but the color marking and the size also differ.

Can you give me advice please and this information will certainly help other beginners as well.

Best Regards
 

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They have the Mitsubishi logo on them. Finding datasheets won't be easy.
I guess the bigger ones might be in the signal path.
I hope you have the service manual, you could find some clues there.
What I see from the pictures is that this machine badly needs a full recap and a very good cleaning of the leakage from the old caps.

Hugo
 
Simply replace all of them with a decent low-impedance / ESR cap such as Panasonic FC. A modern cap such as the FC will be leagues better than any cap available when this machine was made. What was considered high performance then would be mediocre today.
 
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