Electronics Forum / Repair / November 2008

Can some one help me with info on how to disassemble a MAG-CHARGER
flashlight ??
switch is defective , but HOW to get it out......................
nitro2

Hello, I have a Blaupunkt Nevade car cd player which has trouble
turning on.
Most of the time it powers up immediately upon pressing the button
like normal.

Hi, have this Pioneer Elite DV-37 dvd player.....press the open/close button
& disc tray will open all the way, pause for a fraction of a second and close by itself.
Maybe one time in a dozen tries it'll stay open. Would like to fix this & use as a CD transport.
Have cover open, ...

on a local junk market I bought 3 "Surveyor Model 1000" walkie-talkies
(transceivers) for a few Euros. Now, they do not work anymore. I expected
this....
I'm trying to repair them but I need some schematics and manuals of it. One

I live in Australia so have the PAL system I have a Samsung DVD/VCR
combo DVD-V6800(brand new) & an NEC TV RH1777. (Old) When I play an
NTSC video tape & a Region 1 DVD I have a flickering band at bottom of
picture that appears to be the current TV station picture.  I have

The CRT, & yoke seems ok because if I put a small magnet near the
little coils on the pin correction pcb, the pix is near perfect.
The four corners are out of purity a bit, & overall convergence is bad
throughout pix, & pix is rounded on top & bottom, but height, & width

Does anybody have the manual and the schematics of this multimeter.
R20 is blown up and I do not know its value.
With kind regards,

My 19 year old 27 inch ProScan TV just lost vertical scan.
Probably just the output driver transistor.
I have repaired this TV before, and have both the factory shop manual
(complete with waveforms, circuit diagrams and helpful hints for

From 1978 , does anyone other than me repair these beasts ?
Only ever perished rubber problems but what a work up to get to a position
to be able to just change belts.
--

Why is there a warning on our icicle lights,  Do not connect Icicle
lights with C7 or C9 lights, it could short circuit.  Is that a
serious warning, or just legal jargon to cover their buts?  I have the
new C7 Light, that I want to connect on the same line as Thanks.

i just collected an Gould K50 Logic Analyzer from my Uni's trash.
Which, well, doesnt work, no picture displayed.After discovering a
"Comp. Video Out" BNC on the back side and connecting a regular PAL TV
to it, i got a picture, and could confirm the analyzer part works fine.

I am trying to breath life back into our treadmill. It's a ProForm J8Li
Sears Model 831.297990. This model has the cushioned running platform
and the constant torque motor. Needless to say it is a nice machine. We
bought it new in 1999 (for a $1000.00 on sale. I think it was $1499 ...

Hi All;
I got a bunch of these older GI Mosfets but really was not able to
find much info on the WWW.
Any info would be helpful.

Does anyone have a set of schematics for the C-Audio RA3001 that they could
let me have fairly urgently please ?
The links to the service manual on the supposed C-Audio 'website', just seem
to take you round in ever decreasing circles via other third party vendors