High resistance in switches -- Pianocorder Forum

[ Show ]

Support VoyForums

[ Shrink ]

VoyForums Announcement: Programming and providing support for this service has been a labor of love since 1997. We are one of the few services online who values our users' privacy, and have never sold your information. We have even fought hard to defend your privacy in legal cases; however, we've done it with almost no financial support -- paying out of pocket to continue providing the service. Due to the issues imposed on us by advertisers, we also stopped hosting most ads on the forums many years ago. We hope you appreciate our efforts.

Show your support by donating any amount. (Note: We are still technically a for-profit company, so your contribution is not tax-deductible.) PayPal Acct: Feedback:

Donate to VoyForums (PayPal):

[ Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 1, [2] ]

Subject: High resistance in switches

Author:
Tom Lear

[ Next Thread | Previous Thread | Next Message | Previous Message ]

Date Posted: 22:00:41 04/02/02 Tue

Roger Wrote:

>A few months ago I had a situation where no matter how I cleaned the R/P head, no >tape would play. Because I never use the record function, I found that the switch >operated by the RECORD pushbutton was not making contact (corrosion, >particulates in the air?) After excercising the record switch a few times, the problem >was solved.

Very good!

On a related note. High resistance in the remote speed control jack switching can cause your tape speed to go nuts.

The remote speed control jack on the front of the cassette deck is never used and the switching inside can also become corroded and create high resistance. This will cause the deck to run much faster than usual. If you suspect this is a problem, you can try plugging in a 1/4" phono plug into the jack a bunch of times to see if that will move the corrosion enuf to re-establish a good connection.

If that doesn't work, give a short blast of contact cleaner into the jack and work the phono plug in again.

If necessary, you can open up the deck and bypass the jack.

On my deck I have removed the remote jack and installed a small switch in conjunction with a resistor, which allows me to slow the tape deck even more than originally designed, to accomodate those tapes which were recorded way too fast!

Tom Lear
San Francisco, Ca.

[ Next Thread | Previous Thread | Next Message | Previous Message ]