Electronics Forum / Repair / April 2004

Hello all...
I have an HP Vectra VL Pentium II with 300MHz CPU. While this system is
generally reliable and well behaved with Windows 2000 Pro SP4, there are
times when it randomly drops into a STOP error or applications start acting

hi :)
the sensor in the door of my old washer machine just broke.
do you think I could join two of the cables so
it believes that the door is always closed?

Folks,
I have a 6 years old Sony KVJ25MN21, and started experiencing audio problems
with it.
It started last week when the TV is turned on, the video is fine but do not

Anybody know where to get some 5600 63v caps? I need to replace some in an
audio amp that I have..
Thanks
-Mike Kennedy

I get a constant beep sound,like a warning from a used GE display
speaker phone,model 2-9375G, is this just warning batteries need
replacing?
cant find anything on web

Hola, necesito por favor si alguien me puede facilitar el codigo del
integrado IC 901 del monitor LG 520si CA-47. Si alguien tiene el
diagrama electronico lo agradeceria tambien el que tengo exploto y no
se puede leer el codigo. Muchas gracias.

do someone have an schematic for an expro80 epromprogramer?
thank,
michael

Tektronix 100 Mhz dual channel oscilloscope model:Tek 465,year:1972
one day channel 1 trace disappeared but when you press beam finder
button the trace is on the top of the crt and while holding the beam
finder button in and moving the channel 1 vertical position pot up &

Is there anyone know any web sites that post Hamfest Schedules?

I've been trawling the net for info on TFT monitors - can't find any! -
loads on CRT's though.
Does anyone know of any TFT info on the net?
Also how can I tell if the screen of a TFT monitor is dodgy as opposed to

anybody got any info on this device which is propably a thyristor or
triac. Its from a motor speed control circuit.(OLD) Have done google
etc but no luck.
Allan

tv is FS-275 M6
Its got cs9304 written on sticker as well
Possibly Grundig CUC1852 or CUC1882
I need a suitable 3 digit number

Does anyone know the RCA part number for the mainboard chassis of this set
it is an CTC/PTK-195MB,  My board is unrepairable and the only number I can
find on the board is 1538350F. I called RCA part specialist but they need a
part number.

Blue and Green are perfect. No ghosting or convergence issues
Red Horizontal lines are perfect.  No Vertical ghosting or distortion.
Red Vertical lines have perfect vertical line but faded red ghosting to
right side.  Red vertical lines are clearly visible.  Red ghosting is

I need the ops/service manual for either a
Sony BVH-500 or RCA TH-50A (which Sony made...they are the same unit,
different name plate) portable 1" vtr (circa late '70's). I also need
the same for a Concord B/W 1/2" R/R vtr #vtr-820 (early '70's). Please