Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Signal generator trouble
#6

Today I dug into the Heathkit. I replaced the 20 + 20 uf electrolytic with two new caps. I might restuff the old one so kept it. A quick check through other parts suggested nothing in immediate need of attention, so power was applied.

Odd sizzling sounds! Power smartly removed!

Another quick chancer - I was being treated to a superb light show from inside the variable capacitor.

I had noticed a bit of dust inside the cabinet, and sure enough, there was all sorts of grime between the plates visible on closer inspection. I set my sights on a good clean. To get this thing out was a pain - had to loosen off all the front controls to get enough movement of the chassis from the front panel. Anyway, out it came for a bath in dish detergent and gentle scrubbing with an old toothbrush. After that, a thorough drying with the hot air gun, followed by a clean and regrease of the bearings. More fettling to get it back into the chassis.

Fortunately, this did the trick, and the instrument is working nicely again, with no more fireworks. Should be a handy bit of kit.

Cheers

Ed

I don't hold with furniture that talks.


Messages In This Thread
Signal generator trouble - by EdHolland - 09-04-2018, 04:18 PM
RE: Signal generator trouble - by Eliot Ness - 09-05-2018, 08:42 AM
RE: Signal generator trouble - by morzh - 09-05-2018, 09:27 AM
RE: Signal generator trouble - by EdHolland - 09-05-2018, 01:54 PM
RE: Signal generator trouble - by EdHolland - 09-07-2018, 12:29 AM
RE: Signal generator trouble - by EdHolland - 09-16-2018, 09:28 PM



Users browsing this thread: 3 Guest(s)
[-]
Recent Posts
Shadow Meter Bulb
Any 6.3 volt pilot light will work. I would use the brightest one I could find in my workroom. Be sure the dial is clean...RodB — 10:45 AM
HiFi (Chifi) tube amp build - but my own design.
Tim, nice write up and thanks for sharing !! Sincerely Richardradiorich — 02:47 AM
HiFi (Chifi) tube amp build - but my own design.
Well, this was a real "Hum-Dinger" :lol: ! This will be kinda long, but hopefully it will help others having t...TV MAN — 01:55 AM
Shadow Meter Bulb
Phorum members, I am trying to find the bulb # for PHILCO Shadow Meter part number 45-2180 that is from a 37-640 chassis...georgetownjohn — 06:53 PM
Philco 41-608 changer coupler
3D-printing...short of machining, of course. Or molding.morzh — 05:20 PM
Philco 41-608 changer coupler
Thanks, Morzh. That solves the issue of the rubber pieces. Now, I need to find a way to replicate the pot metal piec...alangard — 05:07 PM
12' Philco
If it is 12', either Kareem or Andre would have to jump pretty high to look at the front panel. Kareem would have an e...morzh — 01:48 PM
12' Philco
And here's a story about the tires on the truck. Same "no-stoop" guy must have installed these! Take care a...GarySP — 01:17 PM
Hickok AC51 tube tester
I think they have only shown the secondaries of the transformer. Two of them feed the rectifiers' filaments.morzh — 12:58 PM
IF can wire size and Rubber mounts?
Arran If the wire inside cans is the gauges you mentioned, the sole reason for that would be mechanical, to stiffen t...morzh — 12:56 PM

[-]
Who's Online
There are currently 7773 online users. [Complete List]
» 3 Member(s) | 7770 Guest(s)
AvatarAvatarAvatar

>