Electronics Forum / Repair / May 2004

Hello to all NG Members,
I collect vintage small screen TVs and i am currently trying to fix a 1975
vintage Sony KV-9000 NTSC TV.
As i live in non NTSC territory, the TV is used with a digital standards

I need the pin out for the newer delco stereos with dual 16 pin rows.
(late 90's). Anyone have a link for a pinout?
Bob
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I'm looking for a Panasonic AN 363 FM multiplex chip as used in the Technics
ST-9030 FM tuner.  I'm hoping that one of you may have one available for
sale.  Please contact me directly at:
terry@baun.us

I have a 60" Mitsu PTV in my shop which has an odd convergence problem
which is hard to describe in words.  I have created a drawing which
you can look at by going to this address:
http://personal.bellsouth.net/r/m/rm502/VS60VA2.html

Set came in  no sound. Couldnt see any audio anywhere around the outputs,
Replaced IC101(LA7655N). Now at about half volume I do get a little audio,
but not loud enough.and if I go up over half volume it completely goes away.
Cant find any open res or bad caps(ESR). Dont have a ...

I'm looking for a replacement deflection yoke for a Samsung CS-721APF television
(72cm).
The original one has burnt out one set of its windings.
The TV is about 7 years old so I'm a bit dissapointed that apparently Samsung no

      my sister dropped her TV off to me to look at for her. Initially she
said the picture would shrink to a thin horizontal line (Loss of vertical)
but giving it a HIT on top of the set would bring it back. This happened a
few times over the last few weeks. NOW nothing! I took ...

I'm looking for input, manuals, websites, etc....that can clearly
explain how to convert HVDC to HVAC.
Also, how to change the frequency of the voltage from 60 Hz to higher Hz?
Thanks.........Greg

Can someone give me a replacement part number for the output
transistors for this amplifier. I cant locate the numbers used on the
schematic, I suspect these are Bryston internal numbers. Are ther any
modifications to these amplifiers that anyone has done to improve the

I'm looking for information on first, if two flyback transformers output can
be connect in series to combine the total voltage output. Secondly, how to
measure High DC voltage rather than by spark.  And Three, how I could change
the high DC voltage into High AC voltage and then ...

My wife does educational seminars and uses the cd player on her laptop
computer to play music for the participants during breaks.   She
mentioned to me that the music sounded "scratchy" and wondered why.  I
checked and she is right.   So, what is causing the problem?  Does the

Every time we try to beam up tribbles , they beam into the transporter room
looking like cats and not Tribbles .
Should we look for cold solder joints on the transporter control board ? Or
should we just use them as is , to control the mice population aboard the

I have a Toshiba 24AF43 TV, it powers up fine althogh I do NOT hear
the relay clicking. The image is only good in the center, all around
is purple. When I opened the set I found "no voltage going to the
relay".

Does anyone know if the Vert chip LA7838 (From a Sanyo 25") will work in
place of a LA7837 (from a Sanyo 19")  Upon inspection of my Second Sanyo TV
(The one with the bad Tuner), the Vert chip had a hole burned in it.
Apparently all the banging that my wife did on it, shorted it out ...

Hi, Does anyone know of anywhere in the UK where I could get hold of a Delta
Electronics PSU Model No. DPS-145PB-111?
It is from a 'Tiny' PC. I can't find one in my area and I must be looking in
the wrong places online.