Regarding the soldering, I recommend something like Hakko FX888D or Weller WE1010 (the Weller is much more common is Europe). That's about the...
The problem you are having is a broken clutch gear. Very common on these units, you will need a donor to fix the problem. More info on this...
Get some proper cleaner first and clean the entire PCB, the trimpots and the volume potentiometer. Do that first and then come back with the...
I wouldn't use that. It may be suitable for electrical stuff, but not electronics. From what is written on the can, it's a petroleum-based product...
Now I understand what is happening. The howling is either an amplifier oscillating due to a parasitic capacitance created by that residue or is...
I see nothing obvious at first glance, apart from that corrosion in the motor governor area. The capacitors do not seem to be leaky. I would...
I reported, we'll see if an admin can help. At this point I say we should keep this topic, as there are not many responses. The only 2 votes are...
Hi, Given what you're saying about the headphones getting warm and the battery terminal getting hot when plugging the jack all the way, there...
Good work, @JoFugd ! Regarding the Dolby level tape, I recommend that one because I got consistent results using it and all decks, recorders and...
I can't seem to be able to edit the response choices, only to add additional ones. Thanks for the manual for WFGUI, I was looking for it, but...
I understand, I thought you may have other belt driven units. The ones you mention all have very low wow&flutter, would guess something like 0.05%...
@CDV That's a very important point regarding the standards. For example WFGUI (that we probably all use) can measure WRMS according to DIN...
I am curious about what your opinion is regarding wow&flutter on a walkman. I started to ask myself some questions about what figure should a...
I just replaced the pinch roller on the WM-D3 in my personal collection, so decided to take additional pictures as this one has an additional...
@JoFugd You do need to repair the existing DC-DC converter. Designing a boost converter that takes 3V in and outputs 8.2V is very simple with...
I see. It would be interesting to see some pictures with the problem. Regarding the problem with the capstan, I only encountered it on belt driven...
WM-D6C Since this information is not available anywhere on the web due to the unavailability of the CX20068/CX20218 datasheet, I decided to do...
I have to say I never encountered this azimuth instability problem on SONY DD walkmans. @JoFugd Does this problem happen when you tilt the unit or...
Hi and welcome to the forum @Evilbunny ! I into designing electronics, but I am also into repairing and restoring walkmans and other vintage...
I have done some measurements for reference, as I am sure some people will want to see this. Both measurements were done on the LINE OUT to...
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