Electronics Forum / Repair / August 2008

I just bought a PM200-13C & was adjusting the output voltage.  In a
careless fashion, I turned the one pot I saw without marking it,
hoping that the lacquer would break so I could see where the pot was
originally set.  Unfortunately, the lacquer broke off the pot

I have a GR-DVL140E that trashes the tape when doing backward picture
search. It runs OK in normal forward playback. I have had the drive
disassebled almost completely and re-assembled to fix a problem with the
back tension arm. I can feel that when it runs in backward search ...

my monitor has pin cushion effect problem, and the picture edges are out of
the view. the monitor controls don't solve it as the (horizontal size)/
(pincushion\trapezoid) controls don't have effect anymore. this problem is
the same as this one posted here

Hi all, I've searched around this group a bit so I think I've and idea
where my problem may lie, but I thought I should ask anyway, just to
make sure.
The TV in question is a Beko 284222WNS. At a recent party in my house,

Recently I brought an old Toyota, and needed a CD player, cheap...
eBay provide a CD with its separate master radio/casstte unit, the CD
was sold as not reading discs. Toyota compact Disc deck 34203
Firstly, thanks for the great CD FAQ:

my remote for this player broke down.
can i use a universal remote player to access SET UP menu?  i need to
do so in order to reset the DVD Player to region free setting.
thanks.

I've a broken remote for a cable TV box.  It's been replaced,
so the repair is non-critical -- just-for-fun!
Anyway, 3-buttons failed simultaneously.  They are horizontally
adjacent.

A particular board that I'm currently involved in repairing, makes use of a
couple of 15nf 630v dc caps in the primary side of a smps transformer. They
go open or low value, and are easily found initially by running an ESR meter
over them. Good ones go about 38 ohms, bad ones ...

I have a Kenwood VR-407 that keeps going into protection (turns off &
power light blinks).  The owner stated that it was a sudden
occurrence, no lightning strikes, shorted wires, etc... This unit uses
two amplifier modules, one STK413-020A for front & center channels,

I am in the UK and need 8 of these caps:
http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=P10038-ND
Although there is a Digikey UK site, it appears to be just the USA one.
Ordering from Digikey costs $95 plus a $72 postage charge on top, and I

I have need of a portable, low-temperature glue gun for model airplane
repair in the field. Any ideas about how I would go about converting a
standard $5.00 or so ( cheap) glue gun to use with my 12 volt auto battery.
I know I can put a converter on, but , for a variety of ...

Intermittant / vibration problems
Models that use 0.15 inch power connector interboard connections
, loads of them for signals, control and power between 2the 2 main boards.
Otherwise neat idea, line of sockets on each board and then the line of pins

....Does anyone know where I can download the schematic for an Audio
Alchemy CD player?
The model is a Digital Drive System II (also known as a DDSII).
Many thanks in advance.....

Braun Oral B 3D Pulsating Toothbrush, Model 4729
OK, so I know it would be cheaper to just buy a new one but I like the
challenge... and I just bought a pack of 7 replacement brushes... grrr!
This model charges a rechargeable battery inductively and is sealed up

Does anyone know of an inexpensive source for an extension cable
like this?  2-6 feet.  A VGA cable might work but often, these have
bridged grounds and/or some pins not connected.
Thanks.