Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Equipment & Tools From test equipment to hand tools

Crazy issues with an Heathkit oscilloscope
Crazy issues with an Heathkit oscilloscope
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 4th May 2009, 01:36 AM   #1
00940 is online now 00940  Belgium
diyAudio Member
00940's Avatar
Join Date: Sep 2003
Location: Liège
Default Crazy issues with an Heathkit oscilloscope

I was given an old IO-12 oscilloscope by Heathkit. It seemed to work but :

- The crazy thing runs at 400 to 1500 VDC (tube oscilloscope) and comes... with a two prongs main plug. Checking inside, the enclosure isn't connected to anything anywhere either.

- They used a rotary on-off switch integrated onto a potentiometer as power switch, to switch thus 220VAC. After powering the unit a few times, it started to create crazy sparks at start up to finally end up in fire (tripping my home fuses of course).

What should I do ?

- Strip it for parts ? It has a nice transformer, plenty of switches, some good tubes, etc..
- Try to make it safe ? I'd have to replace the power cord, find a way to earth it, replace the power switch, replace some old electrolytic caps.
- Sell it on ebay for spares ?
All that is excessive is insignificant. Talleyrand
  Reply With Quote
Old 4th May 2009, 03:24 AM   #2
Geek is offline Geek
diyAudio Member
Geek's Avatar
Join Date: Sep 2004
Making any Heathkit scope safe is a chore. A lot had bum transformers, leaky caps and junk switches.

IMO, fleabay it.

  Reply With Quote
Old 5th May 2009, 11:47 PM   #3
gain wire is offline gain wire  Canada
diyAudio Member
gain wire's Avatar
Join Date: Nov 2004
Location: NCR
I'd say sell it on ebay, inform the buyers of its problems and let someone else have the fun of restoring it. I used to have one, and aside from a horizontal amplitude problem (I didn't know anything at the time) it was OK. Certainly didn't have any sparks and it well assembled. Looked great too. too bad I trashed it. I hate myself for that.

Sell it on ebay. or should I say "fleabay" like geek! lol
Trans-directional-servo-logamp non-zerocrossing autogain compressing thingamajig
  Reply With Quote


Crazy issues with an Heathkit oscilloscopeHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Going Crazy(er) rkernell Analogue Source 1 19th April 2009 11:48 PM
HOW to use a Heathkit Model 10-18 oscilloscope Dusk Solid State 7 14th October 2004 10:00 AM
I'm going crazy, please help, Pic's Bensen Solid State 28 16th September 2004 05:11 PM
Hitachi V202 oscilloscope issues ashok Equipment & Tools 0 3rd September 2003 05:35 AM

New To Site? Need Help?

All times are GMT. The time now is 02:22 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio