Electronics Forum / Repair / February 2008

For anyone that is interested there is some Tektronix schematics posted in
the alt.binaries.e-book.technical group at the moment. I know some people
were asking for some and they may find it in there. I have downloaded some
myself if necessary if anyone needs them too.

I am looking for Schottky Barrier Rectifier 2A 100-70-100. I can not
find it any where in UK. I just want one. Any idea where can I get it
from ? Thanks

This unit plays DVD's, DVD+RW from other recorders and CD-R MP4's perfectly,
but has no writing activity. Is this a weak laser and can it be replaced.
Manufactured Dec 2005. Can anyone help?.
Thanks, Grahame.

Im trying to repair a sharp 32" tv - model  #  32U-F510 .  Anyone have
a schematic for this ?  Or some advice ?
The picture is sunken in at the sides . This happened one day when the
owner turned it on.

Happened to read a couple old posts and realized Dan hasn't been on the
group for a while, maybe 3 or 4 years.
Where are ya, Dan? Still around? Still in the business?
Anyone got an update?

Hi, I have a 2003, 27" Toshiba Tv M#27A33 that has 10 to 15 horizontal
lines across the top 1/4 of the screen. Have tried various adjustments
on screen and with dials on back of transformer, pots on board, No help.
Everything else works great. Could this be a simple capacitor

I have recently encountered a problem with my RCA 27" TV. The TV blows
the fuse every time it is plugged in. I am unable to do voltage tests
as there is NO power. I believe the problem is within the first few
components (filter capacitor, diodes, chopper transistor, etc). I have

This set came in with a complaint of no picture. The first time I
tried it except for being in need of a slight Hor. stat and focus
adjustment it came right on. The next time I tried it it had filament
but no HV. Brfore I pull the D board out, does anyone have any

Been working on this unit off and on for a while.   It will power on for
about 1/2 second then power right back off.   History on this unit is that
for a while it started to power off on its own with no rhyme or reason, it
progressively got worse to the point that it wouldn't ...

sorry if this question is OT for this group but thought I'd give it a
go. I am returning to UK and have a relatively new ( 6 months old) HD
plasma TV I want to bring back if poss. - I know 'normal' TV's won't
work but are plasma any different? ( bear with me I'm not techie-just

I'm looking for small LED assemblies, round printed circuit boards
(diameter from 1/2" to 1") with several LEDs mounted suitable for 12VDC
operation.
I want to glue these assemblies into existing car and trailer lamps for

Hello, I have a problem with my LG 700E "Studioworks" monitor. Could
someone tell me how-to open it up. It has a plastic faceplate with
buttons at the front of the monitor (the portion that faces me when 'm
sitting in front of the monitor). It also has a big plastic body (rear

please help.  we just bought a mitsubishi WD-65731 projection tv a few
months back.  we have been using it for about 3 months (give or
take).  just the other day, it suddenly turned of by itself. and we
noticed that theres a steady red light on the lamp front panel

Got two of these that need green CRTs. Talked to Fulton and they only
have the CRTs for serial numbers beginning in 97 (or later I assume)
These are earlier, and I am wondering what the difference is. They are
shipped with the optics and coolant all but the output lens. Is the

Here's a trick that might interest anyone who enjoys repairing things.
Every year the local cheapo store stocks "bug lanterns" which they don't
roll out until half way through summer because they know the blue
fluorescent tube won't last the distance! The ballast is badly designed ...