Electronics Forum / Repair / June 2007

yes T , not TL, could be To72C i suppose, dual opamps
Does anyone know the maximum supply rail voltages. ?
I will replace with TL072 as ps fault allowed the secondary supplies to
these to go well beyond +/- 15V at some point, just wondered if they were

I changed a KSS-213B pickup in an aiwa CD player. the old one would pickup
CDs sometimes, but most of the time it wouldnt, and the CDs it did pick up
it would only play a track real noisy before loosing out.
So I changed the pickup, but the new one dont work at all. i read ...

RCA Plazma, under warranty, Model # P42WED33, unit has vertical bars
running down the
right hand side of the screen, about 1/3 of the screen has lines that
can be seen only on dark

I'm about to configure my 97 Plymouth van so that it has two batteries. The
second battery will be kept in the rear of the van in a battery box with a
vent through the floor. I'm using a Mega-Tron RV-Marine Deep Cycle 12v
battery, which will provide power to a medical device at ...

I am in the process of replacing a power transformer in a musical
instrument amplifier (solid state).  As the existing transformer
doesn't currently pass the continuity test across the primary, and the
coil wire seems to be broken somewhere in the coil, I am thinking of

Anyone know the correct way to remove and replace or even initially place
(without possibly straining the legs of the tranny by lateral forces) such
spring clips as in this 2 angle view ,combined pic, I took
http://home.graffiti.net/diverse:graffiti.net/clip.jpg

Having a laptop with a suspected bad backlight or Inverter.
I had changed the BL but still no display. Can see the image on the screen
with a flashlight but the BL doesn't lit.
How can I confirm if the Inverter is OK ?

  I would like to make a PC board of a small circuit...  is there any
programs that can help me accomplis this?

We have a Mitsubishi CT-2153STX that was working fine, until our
friend's child pushed a button on the front(maybe?). Now it just has
white noise (fuzz) and says "28:........ AFT ON
UHF )))))))))))))))))......................"

I am trying to locate or cross reference two diodes. Both are located
between the horiz. and PCC circuit in this Sanyo model #HT32744. Both
are shorted. Part # on diodes (FMPG3F, FMCG28). I searched this site
and found one post for FMPG3F where the guy was looking for a

I acquired a marine battery charger/conditioner (Promativ 40-3). I
just tried it on the battery from a lawnmower which at first showed
less than 7 volts (12V battery). My car battery 10 amp charger could
barely get any current into the battery (barely moved the meter).

Yet another one, an unsupported 3W resistor , with a fractured wire.
Doesn't matter what maker, none of them seem to take this failure mode into
consideration. The common factors bass combo (so far only bass ones ), large
Rs suspended off the board, can be mounted vertically or ...

For those who don't know, I like old things. I have an 89 Park Avenue,
and the right channel is out on the stereo. Surprisingly the cassette
works prefectly.
Scrapped a 90 Olds Delta 88 not too long ago, and today I had my guy

I have a keyboard which I love, and which is beginning to wear out. (It's
a DataDesk SmartBoard.) I am trying to get a hold of a replacement, but
the company has been apparently imploding for years -- none of the linked
distributors have it (except perhaps a company in Canada), the ...

Mr Cook was asking about dental burrs a while ago, CPC in Preston have a
set of 30 diamond burrs on offer for just £2.74 + vat
www.cpc.co.uk  Product code  TL1035904
Ron(UK)