Electronics Forum / Repair / May 2004

I NEED SCHEMA FOR DDR SDRAM MODULE.
THANKS
GORAN

Has anybody found out how to make a basic common (1.5v battery operated)
quartz clock movement run backwards? If so, how?
I want the clock-face to be seen in a mirror...
TIA !!

Need some assistance in fixing a Tektronix TDS 220 Two Channel Digital
Real-Time Oscilloscope.
When the CRO is first turned on I have a faint display on the LCD
screen. This display disappears after about a minute or so. If I turn

Hi My monitor suddenly has a strange behavior when I power it up in cold
situation (only after more then about 5 mins powerdown) .
I hear  a few times 3 - 7 times a clicking noise with  some flashing on the
screen (the monitor tries to show the image without succes )

I'm considering tooling up for surface mount devices and
How much is this going to cost?
I'd be doing it is stages .
Soldering de-soldering of discrete devices then for instance tool up

My TV will not power on.  I checked the power connections and the fuse in
the connector.  There is power going across the fuse, but the nothing
happens on the TV.  Any suggestions?
THanks

Digital Storage Oscilloscope  204-A & 2090 combination.
All suggestions, hints, URLs, street addresses, etc appreciated
   TIA
       Norm

hello i started using a higer resOlution on my monitor  (KTC 17")
about 1024x1024 something around that and not too long after that my
HOT went bad, right now a replacement doesn't seem to work, keeps
going bad now i think the flyback is bad. this is a new monitor so i

I'm working on a model 250 amplifier that came into our shop for
repair. The customer reported that the unit smoked when it was powered
up. So far I have found the following defective components:
1. Q4, Q5, Q8, Q9, drivers open

I have an old Biddle Megger, model 601 that I was told was made in the
fifties.  It indicates that it will read up to 20k ohms.    I have no
idea how to use it and would like to use it for servicing antique
electric motors.    Anyone got any pointers or even a manual they could

Anybody have any experience with the vertical deflection circuit of this
model?  A friend has one with both channels almost dead (just a touch of
vertical deflection) and the traces are below the center line with little
impact by the vertical positioning controls.  A dejanews search ...

The start pad will occasionally not work on a samsung microwave no matter
how hard you press it, then a day or 2 later it works ok. All other pads
work.  Is there any way to repair this?
Thanks

Normally, on a Wega, you can access the service menu by pressing in
succsession Display - 5 - Vol UP - Power. This is the brand new model
for 2004 and it seems to not be working. Is there another code for it?

it's a 25inch no-name TV (bought in German supermarket, labeled "LIFETEC",
don't have model-# right here) set but looks like to be Philips
(CRT is Philips and lot of components).
When turning on from stand-by, initially everything seems normal,

I have a perfectly working Sharp cu32fs51 tv except for the INCREDIBLE
lack of color purity! When showing a blue screen it looks like the
Northern Lights....big blotchy areas of red green blue. Gonna try to
get hold of a degausser but i'm thinking something else has gotta be