Electronics Repair

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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

Kenwood DG-5 digital display service manual

Found some PDF's such as this one: http://www.radiomanual.info/schemi/KENW_ACC/Kenwood_DG-5_serv.pdf But the schematic...
0 comments posted 2yrs
posted by tech
0 comments posted 2yrs posted by tech

Wireles printer net names

It seems my printer has two net names DIRECT-vrA5-TR4700series and CANON-ij-42222-TR4700series and confuses the compute...
0 comments posted 2yrs
posted by vjp2.at
0 comments posted 2yrs posted by vjp2.at

Is it a capacitor, is it a resistor?

I was asked to repair a Pioneer QX-949 quadraphonic tuner/amplifier. It is a complex beast and one channel had gone dow...
10 comments posted 2yrs
posted by liz
10 comments posted 2yrs posted by liz

6v pilot lamp

Trying to locate replacement bulbs for an old Wards / Airline transistor radio, they are 6.3V but only 20mA rated. High...
8 comments posted 2yrs
posted by tech
8 comments posted 2yrs posted by tech

PSU Ripple

Returning to this Marconi signal generator which has a lot of ripple on the (linear) PSU output, I managed to get probe...
5 comments posted 2yrs
posted by cd
5 comments posted 2yrs posted by cd

USB functionality.

Hi, This photo, https://commons.wikimedia.org/wiki/File:USB-OTG_Setup_IMG_2342.JPG suggests, to me at least, that the p...
11 comments posted 2yrs
posted by peter
11 comments posted 2yrs posted by peter