Electronics Forum / Repair / August 2004

Someone asked me about the following.  It looks to me like a bridge
rectifier but either it is something else or died in a really strange way:
"I'm repairing a desktop centrifuge (Eppendorf 5417).
There is a component on it which is completely unfamiliar to me.

I can see color on a monitor when in record mode, but playback is
black-and-white.
Any ideas?
Thanks.

My Microwave doesn't work anymore It's a 2002. Can anyone help me find a
solution?

I have a DRMON19 monitor that has no picture. One evening this 19"
computer monitor worked great, the next morning it didn't. Nothing was
changed overnite in its setup or location.
Upon turnon nothing comes on screen. The Power Indicator LED still

$400 to fix my Phillips 52" TV (10 years old) , service guy said the High
Voltage Circuit board was bad, symtoms sound no video

Did magnetrons can be tested by simple ways? for example, using a
Digital Multimeter
How do I know if a magnetron is still good or defective?
Is there an average measure o test between the magnetron's terminals

Recent problem with my son's tvcr.  Switching it on by the mains switch on
the side, I press the standby button on the front and it powers up.  Sound
can be heard instantly, but it returns to standby before the picture comes
on (approx.5 secs.). Set only 18 months old with very ...

Hi all, I'm having a problem with corrosion in electrical connectors in a
marine application (my boat located in the Atlantic); the connectors are
located in free air, not under water or anything. Does anyone know of a
treatment I can apply to the connector's contacts to prevent ...

advanced the G2 on the green gun and found full vertical deflection.
Of course it was all green, and had only a trace of an
image in the background.  Also there are some 10 or 12 horizontal
lines speced in the image.  So I have vertical deflection.  What now??

I am constantly amazed at what weird /unheard-of/ downright cheap 'n'
nasty-sounding "brand" names continually pop up on the front of 'brown'
goods like TVs,Videos and stereos. Most of the culprits appear in large
national supermarket and electrical stores. So, here are some of the ...

I found one of these projection sets, I liked it because of the bose hi-fi,
and dolby sorround.
Anyway, The set had a very dim picture, it was out of focus, and there was
no green period.

I have a problem with a Mitsubishi VS-5001CA
It blew the vertical deflection amp IC401 adn took out the PS as well.
all parts int eh Vertical section have been replaced and the PS has been
fixed.(PS proven in another TV)

Is there a brand of shaver that will still work with
the cord even if the battery's dead ?  Norelco won't.  
And did I shorten the battery life
by leaving it charging overnight ?  This Norelco is

My dell inspiron 4000 screen won't quite stay upright.  After too many
openings and closings, I get the feeling it's become a bit loose.  Unless
it's within about 5 degrees of 90, the weight of the screen will flop it
open to 180 degrees.

Thanks to all that responded,  The problem Was a .22 cap (c14154), across
zener (CR14115) in the base of Q14115, the 5 volt reg.  This is the source
for the 5 volts to the tuner pin 3, 7, &8.
Guess that explains the error code 198