Electronics Forum / Repair / March 2005

I'm going to be putting a tv in a room where the viewing area will be
across the room, with a lot of ambient noise.  I'd like to hook up my
tv to speakers in the viewing area, but the tv has not audio output,
just a headphone jack.  Is there an adaptor that will allow me to

I was wondering what do you call the kind of rubber/foam type heat sink
you typically find attached on a IC in a small non/poorly ventilated
casing (e.g. pager, cell phone)? Its typically gray in colour and feels
soft and rubbery. I think some of the old Apple Powerbooks also use

This TV was dead but I found 5 parallel i ohm resistors o/c (not
burnt) in the SMPS. Replaced and now emits regular faint clicking
sound.
Anyone got a circuit diagram please? - I've searched everywhere.

Hope someone can help me! I've got a 4 year TV that went dead when
went on vacation last year.
I already bought another one, so this is a project for me since I hav
electronics experience.

Hi, I have read a bunch of posts about the capacitors on circa 1990s
Mits but this set is different from most of the posts I've read. This
one has the 930B436 PIP (no bypass?) which does NOT have the surface
mount caps and I've replaced just about all of the electrolytics in the

Suddenly ,there're a few minor problems of my  GCT-8ITB M.B need to repair and fix up , its circuitry diagram is needed for references when reparing
...dissappointedly korean G.C.T. went into liquidation in 2000.
would anyone kindly Share your circuitry of GCT-8ITB?  
even the ...

I have a Dell-branded monitor, model D1728D-LS, that has an issue.
Yesterday, it was working fine until mid-afternoon when the viewing
area changed to an vertical 2"-wide rectagle.  It did not crop the
image, rather the width of the monitor was compressed into this

This brandnew VCR has a few problems: +12V, +5V and + 28V present
No display, no sound, no pic
All fuctions acting weard, no reverse or rewind. In PB with tape running the
RF ANT Prog shows on RF out and SCART. Power ON/OFF does not function, Eject

Hi,  set is SAIVOD 14C5N (=ANSONIC AN- 1400). 1998 ONWA CHASSIS
revision 06 11 98 .
set initially dead, had squeal from psu and shorted HOT (D2499)
...replaced HOT and snubber cap, plus two electrolytics in the psu c509

Hi, I have just taken an introductory electronics repair course but I am
having trouble diagnosing a Toastmaster breadmaker (model TBR15).
The problem is:
The machine appears to work fine until it gets to the baking part of the

Does  anyone have any documentation on the Panasonic DVD TEST Disk
DVDT-15 .
I just puchaced the  above disk from MCM electronics it looks like it
could be useful in DVD alignments but there is no documentation that

I've never seen wattage ratings on a capacitor--voltage yes. Is it
simply .5CV^2 and that's it? I can design a circuit for a particular
capacitance--but how is the physical size of the Cap determined--I've
seen big capacitors with same MF's as little  caps?  What am I missing?

I have an audio mixing desk from the 80's that is a bit 'hissy' (i.e.
background noise with no inputs).  Would I be able to reduce this by
replacing the op-amp ICs with lower noise versions ?  ...or is this
sort of noise nothing to do with the op-amps ?

I have to keep reprogramming all of my specific video and audio settings.
It's like someone hit the "setup" button on the front and then loaded
factory defaults with the -channel button.  But nobody has done this.  It
resets all by itself.  Is there a battery somewhere in it that ...

I have this 8mm camcorder Nikon VN-840 which needs caps done.  It is using
a sony board set, but I don't know which one it is so I don't know which
cap kit to order. Can anyone help?
Thanks.