sci.electronics.repair Google Group

Re: HP 214B Pulse Generator repair question

je...@cruzio.com (Jeff Liebermann) — Wed, 08 Sep 2010 04:20:13 UT

On Tue, 07 Sep 2010 09:27:00 +0200, Richard Rasker
Place an amps guesser in place of the fuse and measure the operating
current. Ummm... replace the blown transistors first. Then select a
value about 2-3 times the measured current. If you're charging a big
filter capacitor, consider a slow blow fuse.

Re: Plasma TV Foggy area

mhyw...@yahoo.com (Meat Plow) — Wed, 08 Sep 2010 03:45:00 UT

My son for some untold reason scratched the glossy protective cover on my
51" Panasonic rear projector. It was done with a pencil and maybe an inch
long vertical. It took me a very long time to stop staring at that
particular spot that wasn't anywhere near the center of the screen. I
think too that it would be too much of a distraction for me to watch a

Re: Plasma TV Foggy area

grizzledgee...@comcast.net (William Sommerwerck) — Tue, 07 Sep 2010 20:51:29 UT

It would drive me stark raving bonkers.

Re: HP 214B Pulse Generator repair question

mhyw...@yahoo.com (Meat Plow) — Tue, 07 Sep 2010 20:36:10 UT

This guy just doesn't seem to get it. I could see if he was working on a
GE MRI machine or Agilent DNA spectrometer. But this is an obsolete pulse
generator from the 80's. Besides repair is he also legally responsible
for calibration and certification?

Re: HP 214B Pulse Generator repair question

whit...@gmail.com (whit3rd) — Tue, 07 Sep 2010 20:02:29 UT

Put it another way: you're responsible, and want to get the machine
both working and working safely. The fuse selection isn't a 'legal'
decision, it's a technical one. You'll use technical data, judgement,
and take technical advice.
The 'correct' value fuse can't be critically important, if its failure

Re: Supergluing your fingers together

zekfr...@zekfrivolous.com (GregS) — Tue, 07 Sep 2010 18:44:48 UT

Superglue works much better on some things when you
use the accelerator. It comes in a separate spray bottle.
I often try to use it as a tempoary hold, and then use silicone rtv
or other glue. Silicone withstands movement, and superglue does not.
I also see JB Weld easily breaking with some vibration.

Re: Supergluing your fingers together

p...@hovnanian.com (Paul Hovnanian P.E.) — Tue, 07 Sep 2010 17:36:13 UT

Glue tiny parts to a lathe turning plate. As long as you are just turning
the parts with light force, they stay on. A small tap removes them.

Re: Plasma TV Foggy area

mhyw...@yahoo.com (Meat Plow) — Tue, 07 Sep 2010 17:26:09 UT

The construction on the viewing side is a dielectric layer then the front
glass. Sandwiched in the dielectric are electrodes. I think the front
glass seals the gas cells so there would be no chance of removing it if
this is the case. I don't know what the dielectric is made of, possible
glass with an oxide coating. If that were the case one would assume that

Re: Plasma TV Foggy area

m...@nospam.com (Michael Kennedy) — Tue, 07 Sep 2010 16:47:51 UT

My best guess by looking at it is something that is on the inside of the
panel, but certainly not the actual pixels. It is definitely tolerable. If
anyone saw it they would think the TV just needed to be cleaned in that
spot.

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Re: HP 214B Pulse Generator repair question

je...@cruzio.com (Jeff Liebermann) — Tue, 07 Sep 2010 07:57:23 UT

On Tue, 07 Sep 2010 00:50:01 -0700, Jeff Liebermann <je...@cruzio.com>
wrote:
Never mind. It's the same as the one on BAMA. No parts list.

Re: HP 214B Pulse Generator repair question

je...@cruzio.com (Jeff Liebermann) — Tue, 07 Sep 2010 07:50:01 UT

On Mon, 06 Sep 2010 17:29:03 +0200, Richard Rasker
Try getting it from the Agilent site:
<[link]>
I'm having a problem downloading it (hangs 25% of the way through) so
I can't tell if it's the same as the one on BAMA.

Re: HP 214B Pulse Generator repair question

spamt...@linetec.nl (Richard Rasker) — Tue, 07 Sep 2010 07:17:24 UT

That would be great, thanks!
Richard Rasker

Re: HP 214B Pulse Generator repair question

spamt...@linetec.nl (Richard Rasker) — Tue, 07 Sep 2010 07:27:00 UT

I'm legally responsible for whatever goes wrong (further damage or injury)
if I put in the wrong parts, most notably fuses. Furthermore, this thing is
used in a university laboratory by quite a number of people, so I really
need to get it right. So in this particular case, guesswork is out of the
question (but if I had to guess, I'd say that the fuse should be something