I just received an NOS, in-the-box AIWA PL-303 in mint condition and restored it over the last few evenings. The restoration went fine and the...
I am looking for a spare charge port for an AIWA PL30/303 as shown in the picture (the component as such as it is soldered onto the board,...
Excellent detective work, @nutronic! I replaced all SMDs right after I got my F707, but this was at the beginning of my career as a tinkerer, so I...
Many thanks for this meticulous and precise report, @nutronic! This will come in handy when I get to working on my F707 again – which will,...
Thanks for the hint! I hooked up my converter to the scope tonight and took it for a spin. Unfortunately, I do not seem to be any wiser–yet. It...
Great news! After reading your post, I was going to suggest you do exactly that. 17 windings seems manageable. Unfortunately, this does not seem...
@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...
I replaced it, but there was no change in behaviour, unfortunately, When I accidentally got the Walkman working one time, I noticed that the 3,5V...
Thanks, @Squiggly. I appreciate your support. Unfortunately, the matter is more complicated. :) The DDC FLEXIBLE BOARD is what's in the copper box...
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