Electronics Forum / Repair / October 2007

The patient: SONY CFD-758 portable AM/FM dual cassette and CD player,
manufactured 1993.
Rescued from neighbor's garbage. Very nice shape, clean, no visible damage
or abuse.

Hello, i have this set...65xbr10w....iirc circa 2000 'vintage'.
Now, there may be an intermittent issue developing with this set....so
far only during 1080i playback...this set has one 480p/1080i capable
component input. The issue is that there has been some intermittent

Model # AVR-10, has raw B+ plus & minus, @ turn on, but display is
totally black, & unit is
otherwise dead. Outputs all check fine, nothing shorted, or open,
there isn't a relay, or control

I try to fix this combo tv.The problem that IC on power supply circuit
completely burned up and I can't read the sign on component.Please help
me identified this IC.It's location on radiator in power supply circuit
and on pcb it says U850.Thanks

I have a 3Com ADSL router (model 3CRWDR100Y-72) with a blown SMD fuse in the
phone line input and I cannot find the value and type for a replacement.
Dimensions are 3.18mm x 1.56mm, I believe it's a 1206 size.
the fuse is transparent with the letters FT engraved. In the board are ...

I had a samsung txm2796 come in with no pix.
It turns on, you here the high voltage surge up, then it shuts down
with no picture and then makes a diddle noise though the speaker.
The H out is not shorted. ESR caps nothing jumped out.

My TV has started playing with a wavy distortion. The distortion
almost looks like a magnetic interference. It has this problem with
everything unplugged. I have moved the set to different locations and
different outlets, letting it sit for 5-10 minutes before using. When

Hi folks...
My sister, who lives on the other side of the country from where I do,
has a fairly new Magnavox LCD TV that just went kaput. If I lived
closer, I'd have already taken the thing apart by now and troubleshot

Can anyone advise how to take a Philips iron model 232 apart?
Thanks
Steve

This is probably a bit off topic but does anyone have a wiring diagram
for an old automotive generator and associated regulator?  I bought an
old Bobcat skid steer.  I was surprised to find that it has a
generator rather than an alternator.  THe generator has 2 posts to

RCA F35676MB, CTC197CD, ser 649560677, mfr Dec 1996.
Have you had one of the CTC197 FBT failures where a ring test shows good but
the flyback is shorting or arcing internally only under full power?
This set has the "four strikes you're out" symptoms of a bad FBT reported in

27 " LXI, 15 years old.  Suddenly not responsive to video controls
(birghtness, contrast, etc).  The sliders move on the menu screen but
the picture does not adjust.  Looks like everthing has gone to a
maxxed out setting.

Not just any amp. I know how to do it and it is not only time to prove
myself, my Sansui fried
So I need an amp. Going in, I want to protect my speakers, and my
design will never distort. The gain stage that accomplishes that is

Got is out of a dumpster, stretched belt as usual but after belt
replacement the motor still can't manage to play the tapes without skew,
there's no trouble moving flywheel and tape transport seems to be fine,
the problem is even with fresh repaired cartridges.

I've got a C-audio power amp model RA4001. The unit is stuck in
"protect" mode and won't energize the softstart bypass relay. The
poweramp channels seems ok, and there are no dc-offsets. Either anyone
has a good hint or possibly the schematics for this unit. Greatful for