Electronics Forum / Repair / June 2007

Do I need a "stereo microscope" to do SMT? Or will a good lighted
magnifing  lens do it for an occasional MSOP-8 install? If a
microscope will one of those "school lab" $75.00 ones work? Thanks All
for your time.  Wayne

I'm desperate.  I have a three year old Samsung 32" that has crapped
out on me.  There is no tv service shop where I live and I'd hate to
give up on this tv.  I called Samsung and got no help except for them
to tell me I could take it to a place about 3 hours from where I live.

I'm replacing the batteries (2 x 12V, in series) in a Best power supply from
the early 1990s.
Obviously, I have a negative lead, a jumper to put the two batteries in
series, and a positive lead.

Hello. I had the back off my 27" JVC TV and when I put it back on and
plug it in it shows "video" and neither the remote or the TV will
work. It's a good TV and I wish there was something simple I could do
to fix it (blown fuse?). Can anyone help? TIA Craig

The new zenith tv i got makes sounds like its about to turn on, but
the pictures wont pop up. Can someone give me suggestions on this
problem? Thx.

When repairing circuitry, its often tricky to remove flux residues
from the PCB after rework.
The flux remover spray I find locally in my area doesnt seem to be
very effective.

does anybody know how to set this scope to defaults.I had minimized the
display brightness and now i see nothing and i don't know how to change the
screen to be bright.please help anybody
seba

I've got a Dell E153FP1 flatscreen to fix , the green on button led is just
flashing, any ideas please nothing else.
DH

I have a mid-80's HK integrated amp (PM-650).  It's been very reliable and
sounds good, but there are a few things that have been bugging me:
1.  The output of L & R channels are not equal... the left channel is louder
for any given source.  It's in the pre-amp section, because I ...

Hi, Anybody here been or know what being an SMT operator in a factory
setting is about?  I have much experience with through hole soldering
in a repair shop, but have never worked in a board factory.  Think any
of my experience in repair would be of use there?  Thanks if you are

I'm trying to troubleshoot a power supply problem in a Panasonic CT-27G31U
chassis. The set won't start and I get a high pitched squeal after the
"Power" button is pressed which remains until you unplug the set.
Does anyone have a schematic that could provide the power supply ...