Stereo2Go Forum Reader

studeb - 2012-01-09 13:00

Hi,

I am trying to ressurect my WM-7.

I replaced the belt with a Sony part, and now the mechanism runs normally.

But when i plug in headphones (not the original ones) in, it starts reversing direction, back and forth.

If i remove the headphones it will continue doing this until i press stop, or remove the batteries.

Has anyone come across this before?

Also, does anyone know what resistors are in the remote for reverse and stop?

Thanks,

ao - 2012-01-09 13:42

Yeah, I've had this before. The motor servos get a mind of their own.

One for member Dottor Walkman I do believe

studeb - 2012-01-12 11:57

So do you know what the issue is or was?

From the description in the manual i assume its downstream of Q316, thought someone must have been here before, from what i have seen on ebay, this is a common issue.

Interesting, the output gnd is +3v over chassis. I will have to check that also.

I'll start debugging from there.

type2tapehead - 2012-01-13 03:53

This normally occurs when you try to plug the player into your hifi
system I have not had this problem with headphones, however not all
headphones are wired the same you could try using a different pair,
I believe a special adaptor was available to prevent the continues a/rev
problem you are experiencing. I have 2 of these players 1 does a/rev
for about 5 mins then I remove the battery's put them back in and
it seems to be fine, the other unit works fine without any issues to date.