Electronics Repair

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Switch-mode microwave HT boost in Paderno MW

Came across a switch-mode boost converter in a microwave HT supply today.~ normal magnetron. Output of the high frequen...
0 comments posted 2yrs
posted by legg
0 comments posted 2yrs posted by legg

HP LaserJet P1606dn

Hi, A HP LaserJet P1606dn produced the output in the scan here. http://easthope.ca/HPLaserJet.P1606dn.jpg No obvious le...
2 comments posted 2yrs
posted by peter
2 comments posted 2yrs posted by peter

Signal Generator Source Impedance

Gentlemen, The service manual for this radio I'm re-aligning states to use an RF signal generator with a source impedan...
8 comments posted 2yrs
posted by cd
8 comments posted 2yrs posted by cd

Can't get radio back in its case

Gentlemen, I had a really strong urge to smash a vintage radio into smithereens earlier today. I just couldn't get the...
5 comments posted 2yrs
posted by cd
5 comments posted 2yrs posted by cd

unknown connector

Can't get a name for this connector. It looks like a miniature version of an ancient signal socket, last seen on signal...
6 comments posted 2yrs
posted by legg
6 comments posted 2yrs posted by legg

3Com USR 56 k Sportster modems.

Hello again, I have two or three USR Sportster modems. Well made and would probably work for decades if need be. Seems s...
4 comments posted 2yrs
posted by peter
4 comments posted 2yrs posted by peter

rec's for NiMH battery tester/charger?

I've got a big chunk of AA, AAA, and some C NiMh cells of varying ages... I'd love to be able to get a reading of how m...
3 comments posted 2yrs
posted by dannyb
3 comments posted 2yrs posted by dannyb

Voltage halver.

A variable power adapter is required to drive a 6 V, 30 W incandescent bulb in a microscope. Similar to the 3-12 V 5 A...
18 comments posted 2yrs
posted by peter
18 comments posted 2yrs posted by peter

Favourite Test Equipment

Hi all, I'm starting to get a bit fed up with having my test equipment blow up just when it's needed. This is the drawb...
40 comments posted 2yrs
posted by cd
40 comments posted 2yrs posted by cd

500 mi tv antena for radio

Can a 500 mile TV antenna work for radio? TV is digital and the signals are separated, but how will you separate radio...
9 comments posted 2yrs
posted by vjp2.at
9 comments posted 2yrs posted by vjp2.at

RGB Mod in Panasonic CTP-2780SF

Anyone ever do one of these to a CRT? Seems like the set has this jungle IC which will be where the RGB lines for the O...
0 comments posted 2yrs
posted by tech
0 comments posted 2yrs posted by tech

Mitigating Signal Reflection

I'm new to electronics and I'm hitting an issue beyond my skill set. I should start by saying I'm not 100% sure signal...
4 comments posted 2yrs
posted by dan
4 comments posted 2yrs posted by dan

PSU Ripple Update

Gentlemen (and others) I only get a few spare minutes a week to look into this, hence this update. Hopefully my latest...
17 comments posted 2yrs
posted by cd
17 comments posted 2yrs posted by cd