Generally, in SONY schematics, the part designators are the same for both channels apart from first digit (the ones starting with 1 are L,...
No, they are different ICs performing different functions (hence the different part numbers). Please check the service manual schematic (page 9):...
The links I posted are for CX184 (headphone amp - IC102) and CX182 (head preamp - IC101) respectively.
CX182 is also available here: https://www.ebay.com/itm/284194586372 Although have to say seems unlikely both the preamp and power amp are gone......
The CX184 amplifiers are available here: https://www.ebay.com/itm/297370164476
Would be interesting if your has that swtich in the jack. Nerver seen a WM-30 to have it (and it's not on schematic either), but given your...
Noticed that faint scratching noise in WM-700 series motors myself, it's audible when the motor comes down to a halt. When it's rotated as higher...
Don't know how hard that tape is to spin, but these walkmans should be able to play even a tape with more drag without problems. I usually use a...
@Phil247 Likely it's a capacitor problem, it's a relatively common problem on this model. A volume slider problem should have crackling and you...
In the DC-DC converters capacitor can fail, transistor and even the transformer. They can simply fail even without reversed polarity. Have you...
@Black Fingers About eccentricity, it's the rubber itself that's the problem. For example, rollers where you buy just the rubber (WM-700 series,...
The WM-30 doesn't have that switch in the jack anymore, that is only on WM-10 and WM-20 series. However it is to be noted the motor servo needs...
Swapping the rollers for new ones might seem like a logical step to do on any restoration. However, finding a good roller that's not eccentric...
Looks like it's a roller pressure related problem. Either there is not enough pressure or the roller surface is glazed and doesn't have enough...
There are a couple of possibilities (generally speaking): - there is not enough traction at the capstan/roller; This can be caused by oil...
Side A sounds really bad: lots of flutter and also muffled sound. Side B is much better in both aspects. Given the super bad flutter it is...
These last W&F figures don't look bad, especially on FWD. Variation looks a bit high, would prefer those values to be more steady. Are those max...
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