@nutronic, how did you figure out that the CTL line needs to be pulled low to turn on the DCDC-converter? Is Q801 doing the pulling? I have been...
I thought something like this, thanks!
I agree with you. But: Julian discusses these figures on his blog, for instance for the PX50, and he agrees that they indicate a noticeably worse...
Thanks Rune. I am no audio engineer and don't have much of a clue of the technicalities, but it did more or less successfully produce a frequency...
If you ever find a solution to this, do let me know. So far, I have encountered this issue only with several F707, and it still has me stumped. I...
Has anyone ever done some serious testing of the sound quality of some high-end AIWA Walkmans (PL, PX range...) e.g. frequency range, and compared...
Since nobody seems to be interested in doing this, I decided to try it myself. Turns out that you can indeed easily rejuvenate lead-acid gumstick...
Doesn't' work for AIWAs. Those are irregular gumsticks with both poles on one side.
Does anyone know what would have been the original charging solution for Walkmans that used AIWA PB-4 rechargeable batteries (for instance in an...
Has anyone ever tried reviving an AIWA PB-3/4/5 lead-acid walkman battery using the "just add distilled water"-technique described in some YouTube...
Thanks for pointing out my mishap. I am aware of the PCB label for the LED, but simply mixed up two components. The issue has been resolved.
I am trying to identify a diode I found on the DC-DC converter flex PCB inside my WM F707 that I am trying to restore. Could anyone help me find...
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