Following on from my receipt of a trashed HS-JX707, someone in China has recently taken delivery of a non-working JL505.

From the photos he's uploaded to the Chinese forum it is not hard to understand why the JL505 is struggling to function.

The moral of the story here is not to buy cheap 100 Yuan walkmans from China. There are people out there who should SERIOUSLY not be allowed to go near a screwdriver and soldering iron!

As with my JX707, what is it with cowboy electronics repairers using nasty sticky tape everywhere? Also kind of flux was he using? It is so thick and burnt on, it looks like black molasses.

More crusty burn on nastiness.

Flexible cables removed.

This side doesn't look so bad.

On second thoughts, those orange tantalum caps look like they've been tampered with.

Very dirty tape transport. Was this rescued from a bin?

Brass capstan fly wheel nicely scratched by the piss poor soldering.

The JL505's Alpha transport.

The good news is, is that the new owner is an AIWA collector and he intends to restore the JL505 to its former glory.

Here's what he's done so far. Cleaned up good hasn't it?

I'll keep you posted with more shots of his restoration as I find them.

More pictures from the HS-JL505 of the cleaned up PCB by our plucky Chinese AIWA restorer.

That is a really good job on what truly appears to be a junk unit. Do you have the original link?

Bub,

Here's the link from the Chinese forum.

http://www.kazuo.com.cn/forum....4&extra=page%3D1

Since you are able to read Chinese, it may be worth you joining it. There are many people on there fixing them to a level similar to this.

If only I could read it, instead I am relying on Google Translate's quirky reinterpretation.

More photos of the main PCB sans capacitors.

Our Chinese restorer has now added back the missing capacitors.

Here the replacement capacitor values can be clearly seen.

This is the radio PCB from the door panel. It also incorporates the manual tuning mechanism as well.

Close up of more bad soldering applied by the previous owner.

The flat ribbon cable is removed and both circuit boards are connected together to test the radio. Our Chinese restorer confirms that he is able to receive FM stations in this temporary configuration.

lovely work there

see if you can get that Chinese guy on to this forum - looks like he'd be an asset 

WOW, just... wow.

Some big reclamation jobs and what sloppy sloppy work! Its journey back to life is great to see. 

Thanks for sharing this project with us... with great pics too.

I need a lot more practice before my soldering gets that good.

A word of caution to anyone reading this thread and in a similar situation not having the original capacitors to rely on.

The Chinese guy restoring this JL505 has made a few errors in replacing the capacitors basing the replacements on the diameters of the screen printing!

The capacitors circled in PINK as seen below as 100uF 4V should in fact be 220uF 2V. I was able to substitute on my JL50 with 220uF 4V as I was not able to source them with a 2V rating.

The capacitor circled in PURPLE as seen below as a 47uF 4V should be a 100uF 2V. Once again I was not able to source a 100uF 2V, but used a 100uF 4V on it's side. If fitted in the original orientation the 4V sized cap will impinge on the microphone socket housing on the chassis.

If there is demand for it, I will post my restore pictures of the JL50. Otherwise enjoy these pictures here instead.

That is all for now. As you were.

Hi, the guy's(who has reborned the JL505) nick name is "INK", quite famous in CHINA's walkman's BBS. We are confident he could solve any problem we meet in cassette player.He is not only a theoretic engineer, but also a practical pioneer.

Regards

Has he been made aware that the capacitors he replaced were of the wrong values?