Electronics Repair

Oscillator Distortion

Gentlemen, Last week I got an old (1968) pulse generator out of mothballs and managed to get it fully functional again....

39 comments posted 1yr

posted by cd999666

39 comments posted 1yr posted by cd999666

Technics KN800 MIDI keyboard no sound

+ User FidoNet address: 1:396/45 Hello All. ML> https://www.ebay.com/itm/165431955758?_skw=4.7+ohm+fusible+resistor ML>...

0 comments posted 1yr

posted by user

0 comments posted 1yr posted by user

Ultrasonic cleaners

Any serious gotchas/unobtainium parts with respect to repairing these 1980s/90s(?) Branson ultrasonic cleaners? I'd lik...

3 comments posted 1yr

posted by user

3 comments posted 1yr posted by user

Adding Machine Ink Roller Tip

Hi, If you still use a physical adding machine, and need to replace the ink roller, there is an alternative. My Wife us...

0 comments posted 1yr

posted by jaugustine

0 comments posted 1yr posted by jaugustine

Switch Contacts

Hi all, I have a switch which isn't making electrical contact. It consists of two leaf springs. Dead simple. They're sp...

13 comments posted 1yr

posted by nhayward8990

13 comments posted 1yr posted by nhayward8990

NTE Electronics gone

Website is offline for good. Anyone have any of their QuikCross 2020, 2022 installers for Win? They use to have a webfo...

3 comments posted 1yr

posted by tech

3 comments posted 1yr posted by tech

Looking for data on 1980s CDS cells - VACTEK VT212/VT212L

I'm trying to find a modern CDS cells to replace these old timers (1982) from the 70s, I did find a catalogue page for...

6 comments posted 1yr

posted by jrr

6 comments posted 1yr posted by jrr

Yaesu FTM-100DR dual bander

This had bad finals, so no tx and the backup batt was low so replaced it and new finals now the Tx is ok but noticed a...

1 comments posted 1yr

posted by tech

1 comments posted 1yr posted by tech

Owon PDS 5022S

A few years ago, my Owon PDS 5022S oscilloscope failed with a strange looking display. See photo at: From what is visib...

10 comments posted 1yr

posted by jeffl

10 comments posted 1yr posted by jeffl

Burying Power Co cables

After Hurricane Andrew in the 1990s there was a lot of talks about putting more cables underground. THe Feds offered Lo...

1 comments posted 1yr

posted by vjp2.at

1 comments posted 1yr posted by vjp2.at

Unusual lamp bulb.

Hi, Photo of the bulb and box here. http://easthope.ca/Bulb25T6.5.jpg 145 V, 25 W. The filament in this bulb is broken...

3 comments posted 1yr

posted by peter

3 comments posted 1yr posted by peter

Car Radio gets hot on AC adaptor

Got a 60W car radio, hooked it up to a 24W 120VAC adaptor Radio gets hot in back lower middle Also ganged red (power) &...

0 comments posted 2yrs

posted by vjp2.at

0 comments posted 2yrs posted by vjp2.at

Replacing Electrolytics

HI all, Electrolytics of all values tend to fall under suspicion when any vintage piece of equipment develops a fault....

6 comments posted 2yrs

posted by cd

6 comments posted 2yrs posted by cd

Glass tubes vs tin whiskers

Unlike lead, tin solder grows dendrites or whiskers which can short circuit. Same principle as concrete stalagtites gro...

1 comments posted 2yrs

posted by vjp2.at

1 comments posted 2yrs posted by vjp2.at

Terminal block usage.

Hello again, I'll be connecting wires to the terminal block of a motor controller. Two connections will each have two w...

4 comments posted 2yrs

posted by peter

4 comments posted 2yrs posted by peter