Electronics Forum / Repair / November 2004

I have  aToshiba CF2665K that is experiencing vertical sweep problem (about
half the vertical picture with retrace lines).
This has been worsening slowly, and I'm pretty sure it's a defective
capacitor somewhere in the vertical circuitry.

have a 35"mitsubishi model ck 3514 every thing ok but no color. had this a
few years back on another set but cant remeber what fix was. it was
something not to common. any body got any ideas  thanlks  jack allen park
tv mi.

Just curious!
Not a very common brand in Europe, only seen a few over the years, i
was wondering if they make their own stuff or if they use other / OEM
chassis etc?

The guitar has two volumes, two tone dials and one three-way toggle switch.
The toggle switch and dials look like the ones on this guitar:
http://www.albinhagstrom.se/hagstrom_h_ii_n.htm
The volume on my guitar cuts off after I go below 5 on the bottom volume

I'm curious as to why my GFCI is tripping when it rains. It doesn't happen
during brief showers, but if the rain is for a few hours or more, the outlet
will shut off. At least that is the way it happened the two times I was home
when it happened.

Anyone suggest a cross for a SUF30J diode that might be a little
easier to find (maybe an NTE equiv)?  It's an "ultra fast" plastic
rectifier, 600v 3A.  It doesn't seem to be readily available from
common sources (small quanity).  It's out of 17" monitor power supply.

My Sharp convection microwave (model R-9H66) trips the circuit breaker
everytime it's turned on.  It started doing this after its door was slammed
shut  by someone.   It's obviously shorting somewhere when turned on, and I
took the outer housing off to look at the wiring to see if ...

I'm looking for titles of magiznes related to tv / video / radio etc repair
in USA and UK. Can anyone give me some titles?
Thx,
Lucek

I bought one on ebay and verizon says they can't activate it. I dial 611 and
connect to verizon and the guy that sold it to me says thats proof that it CAN
be activated. What would keep a cell phone from being activateable (word?)  BG

Working On an RCA PTK195 chassis with no audio.Found open R14153
resistoron the secondary side of the power supply, but not sure what
it is. It may be a 10 Ohm but it is burned and discolored.
It powers the B+ for the audio amp.

I have two RCA CTC197 sets with the complaint of no audio.  The first
one seemed fine, but I resoldered the audio and tuner areas just to be
safe.  It came back with the same complaint.  I've had both sets
running all day for a week with no trouble (both tuner and A/V

Hi, I have a Hitach tv model C28W510TN (A7 chassis)which is blasting
zd970 (PGK180)overvolts Zener 5 seconds after switching on.  I have
checked for dry joints(cold solder) around RV950 and R950 as suggested
else where.  I also found that ZD950(10v zener) was open circuit.

I have a Dynaco 410 power amp that I just fixed. Does anyone have a
suggestion as to how to hook this to an integrated amplifier that
doesn't have a "preamp out".
I figure to attenuate the "speaker B" outputs so that the amplifier

Replacement Adapters For Printers
With WebTV, I have to buy & use compatible (usually old, used) printers,
from which the power cords are often missing.
Each printer seems to have a different voltage & amperage rating, the

Need service manual for Philips TV, model 28ML8805/13B
(chassis FL1.6AA).  Prefer downloadable in .PDF format or similar.
Also need info on Error Codes indicated by TV LEDs (believe there are
about 50...?)