Electronics Repair

6L6 / EL34 valve bases for double sided soldering?

Google images found none. Instead of pins in a ring of 18mm diameter , they are on a 27mm diameter so that the top side...

5 comments posted 12yrs

posted by diverse

5 comments posted 12yrs posted by diverse

Any significance to the shape of the solder pads on a PCB?

I am trying to create a schematic from a PCB and I notice each component has one square solder pad hole and one circular...

14 comments posted 12yrs

posted by nelson

14 comments posted 12yrs posted by nelson

Looking for a Low Cost On Delay Timer

Names can be confusing, so here's what I'm doing.... http://img43.imageshack.us/img43/7434/wvm.gif When 12VDC is applie...

44 comments posted 12yrs

posted by guvbob2003

44 comments posted 12yrs posted by guvbob2003

Find Small AC motor Fusable Link?

Have a 16" Chinese AC Electric Fan that has a blown motor due to lack of lub. Did some quick checking and the motor ble...

8 comments posted 12yrs

posted by kenitholson

8 comments posted 12yrs posted by kenitholson

I have a Robbins & Meyers "Dental Lathe Motor". Where do the wires go?

Info from faceplate. Dental Lathe Motor Frame 18m Volts 115 Cyc 60 RPM 1750/3450 Amps 2.7

3 comments posted 12yrs

posted by John G.

3 comments posted 12yrs posted by John G.

Lorex network DVR failed

Hello, The local fire department has a security system that failed just out of warranty. It's a Lorex LH118000 eight ch...

7 comments posted 12yrs

posted by rcarlsen

7 comments posted 12yrs posted by rcarlsen

finding lost stuff

Techs are so often mislaying important parts, I thought this might be amusing. Several months ago I was working on my P...

6 comments posted 12yrs

posted by grizzledgeezer

6 comments posted 12yrs posted by grizzledgeezer

Matamp combo ...

Had one of these Orange clones on the bench today, and the bastard bit me. Hard. A faulty EL34 in the output stage had...

11 comments posted 12yrs

posted by arfa.daily

11 comments posted 12yrs posted by arfa.daily

IKA mag stir plate/hotplate, "RTC" some info...

Also find info below at: http://staff.washington.edu/wbeaty/chem_stir.html Those IKA-Works stirplates cost upwards of a...

0 comments posted 12yrs

posted by billb

0 comments posted 12yrs posted by billb

W-Audio schems ?

Don't suppose anyone happens to have schematics for a W-Audio Gig Rig 1000 powered speaker system ? TIA Arfa

1 comments posted 12yrs

posted by arfa.daily

1 comments posted 12yrs posted by arfa.daily

Repairable ...

How nice was it when stuff was actually made to be repaired ? Someone brought me a Grundig Concert Boy transistor radio...

4 comments posted 12yrs

posted by arfa.daily

4 comments posted 12yrs posted by arfa.daily

Sony cfd 460 cd player doesnt work, All buttons seem to be depressed.

Radio works OK. Tape decks on bottom work ok. All buttons on CD player appear to be depressed.

0 comments posted 13yrs

posted by PJPM

0 comments posted 13yrs posted by PJPM

Hiwatt Hi-Gain 100, 2007

Blown mains fuse, cracked through the ceramic and sand and blackened internal surface. Someone had replaced the 1A HT f...

5 comments posted 13yrs

posted by diverse

5 comments posted 13yrs posted by diverse

PbF failure of 20mm fuse ?

How to determine whether tinpest layer round an end of the filament or a physical break?, just durious as to failure mo...

2 comments posted 13yrs

posted by diverse

2 comments posted 13yrs posted by diverse

Laney Cub 12R

** Ever see one of these ? An evil mix of EL84s, ECC83s and SMD on the same PCB. Oh, and a DSP chip hiding on the back...

7 comments posted 13yrs

posted by phil_a

7 comments posted 13yrs posted by phil_a