Electronics Forum / Repair / June 2008

I have a Royal 80MX paper shredder that won't shred (go forward), it
goes backwards fine so the motor etc. are working OK. This just
happened suddenly last week. It's as if the paper detection circuit
doesn't recognize paper being inserted. I took it apart and their is a

Bought from the 'E' place for cheap.  Reported symptom: video comes on
and fades out.  Figured it was high ESR smps caps.
Actual symptom: backlight comes on, image consist of random horizontal
lines, which eventually--after some intermittent vertical

I am trying to couple my air conditioner to a blower. I want the
blower to start when the fan in the AC does. It is a 3 speed motor ,
has 5 wires, neuteral and black ( across the AC supply  with an
electrolytic cap between them)  then yel,orange red , these three

Hi, I had a loose power socket and superglued it and that lasted just
fine for a few months. Then it went out beyond
an ability to glue it again, but still have a occasional power
connection when moving it. I pulled out the motherboard and the solder

Assuming no one knows of a UK supplier of packs of just these and not
sockets plus nuts. I've run out of salvaged ones to replace the missing ones
from amps, to be repaired for other reasons than just missing nuts, but
cannot return to owners with missing ones.

How would I go about testing a regulated power supply.  5-20vdc 2amp
an old lafayete model.

I have an old Zenith A1920W TV from 1984 that works great except for
one small problem.
When I first turn it on, I will get nothing but static on all
channels, and then it will suddenly clear up and work fine. It will

Someone wanting a large mixer amp repairing, not seen yet , as left the
owners do do a bit more exploration, as on phone prompting, the problem only
occurs with a feed from a MAC based system, not when instrument feeds only.
Reported as a whirring , booming noise, but not mains hum, ...

Start Quote -----
OK, this is a problem with a 19" Citizen TV. It is just over a year old.
If the set is put on a stand that has a metal object (like a Satellite
Receiver on a shelf) mounted within 8 inches below the set, the pic has

LG M1921A This 19-inch, LCD, colour monitor consumes 55 watts of power
per hour, has digital user controls and a maximum resolution of
1280x1024 dpi. The screen is flat with anti-glare and anti-static
coating. It has 8ms response time and a contrast ratio of 700:1. It

I have this keyboard (for  PC), with a strange fault.
you can type normally then after a few seconds it stops responding in
certain parts - notably the top row of letters ISTR. I find that if
you type slowly, it is a bit more receptive. seems like there's some

a friend is having problems  with the pump in an outdoor pool.
Apparently the motor ran one day then the next day it would not come
on. mains supply is good. He suspects a capacitor - which seems to be
16uF 400v , from the motor.  I've seen it, quite a chunky thing with a

How to get into the box? the bigger ones are easy in comparison.
Such a litle thing putting up such a fight. I've removed the speaker to have
a look inside and all I can assume is that it is just very strong metal/wood
glue locking the top panel part into the woodwork. The rear ...

A long time since looking at such a radio
to check-over/repair as no known history and not powered up in any way
http://home.graffiti.net/diverse:graffiti.net/cr280.jpg
Took apart section by section with bits in separate labelled bags

The dvd-r drive in this unit has gradually stopped playing dvds of any
kind, cds work ok. cleaning has not helped so it looks like terminal
laser failure.
This drive has IDE connectors. Where can I find a suitable replacement