CurtPalme.com Home Theater Forum

SweetChuck

I'm sick of this arcing problem I can never seem to fully eradicate. The end of the HT leads have been repaired too many times and now I'm getting arcing all around the blue Tube somehow thats making the Pix go crazy and that smell of Ozone. I want to replace all of the leads and the HV splitter with brand spanking new ones. Can you still buy new bits for these or are you stuck with used ? I just cannot get the PJ to run Arc free with the splitter bolted on and even worse with the pininfarina case on , but with the splitter hanging down it was running fine, Perhaps thats why now I have an arcing blue tube around the cap as I think leaving it hanging down has stressed the lead.

When it was running ok ish with the splitter hanging down you could hold the plastic end of a screwdriver an inch from the splitter and it would hiss like madness, surely that not normal? I would say that the splitter is leaking but I have tried 2 other used ones, surely they can't all be leaking Crying or Very sad

mhalsan · Joined: 09 Nov 2007 Posts: 146 Location: Astoria, Oregon

I had major arcing and corona problems, both at the splitter and at one of the tubes.

At the tube, I took the lead off, cleaned everything up and reassembled with new silicone. I cleaned the splitter and the HV ends w/denatured alcohol and let everything dry off. So far, so good.

Thanks, Mark

voodoo7869 · Joined: 19 Oct 2007 Posts: 193 Location: Chicago, IL USA

also you might want to check the deflection yoke a nick on the wires will cause all sorts of zipps and zapps

draganm · Joined: 08 Mar 2006 Posts: 8990 Location: Colorado

draganm · Joined: 08 Mar 2006 Posts: 8990 Location: Colorado

**Curt Palme** · Posted: Tue Apr 20, 2010 3:28 pm Post subject:

I agree, nothing wrong with the old style boot. I clean it, but also put a second layer of heat shrink over the existing heat shrink.

Just FYI, the boots are made by Hobson Brothers. I got all excited and researched that a few years ago when VDC stopped selling me new HV leads, and found out that VDC bought out Hobson in 2002 or 2003 I think. SO they have the monopoly on new HV leads. I did find a source of leads in the UK, and bought 20, but the leads and boots were very thin, I don't trust them on the 34Kv used in CRT projectors. For 18Kv black and white sets, no problem.

SweetChuck · Posted: Thu Apr 22, 2010 12:30 am Post subject:

So is normal black RTV silicon ok when reasealing the boots or do I need something special ? I really want to get this right as this problem haunts me .

Thanks for the help It really makes sense

JustGreg · Joined: 07 Mar 2006 Posts: 3098 Location: Kenosha, WI

The HV wire required is UL1911. Good for up to 50kV DC. Resistant to corona effect, chemicals, high temps, etc. etc.; and is silicone sleeved.

It comes in (apparently) many colors. I'm trying to track down a small quantity vendor for ~15ft of bright yellow or safety orange for my 8500. So far all I've found are overseas manufacturers and/or middlemen who want to sell me enough to get to the moon and back. (can't blame them for that eh?)
Found this site (the best I could find with a quickie half hour search)...follow the links on the right to the manufacturer and the specs:
http://www.alibaba.com/product-gs/206277932/UL1911_high_voltage_and_high_temperature.html

As for silicone to reseal the caps, I called around to local repair shops and I found one that's willing to sell me a tube of Dow Corning he uses. He's had a case of it for a while and he's concerned that if he doesn't use it or sell it that it will reach EOL and be NFG. I guess the liquid vehicle part of it seperates over time leaving an unuseable gak under the liquid.

Ile · Posted: Thu Apr 22, 2010 11:40 am Post subject:

How about red belden one?
http://www.surplussales.com/Wire-Cable/HVWire-1.html

Maybe this company have ready made leads or are willing to made patch.
http://www.jettron.com/crt_j122ac.html

draganm · Joined: 08 Mar 2006 Posts: 8990 Location: Colorado

Tim in Phoenix · Joined: 21 Oct 2006 Posts: 4409 Location: Phoenix

Sparky015 · Posted: Thu Apr 22, 2010 5:19 pm Post subject:

If your really stuck on using Dow, you can request a sample tube from Dow Corning for free. 1 tube is more than enough to repair your HV leads. That's what I did when my M8000 started arcing a few years ago.

SweetChuck · Posted: Wed Apr 28, 2010 12:31 pm Post subject:

OK , I tore the tubes out , clean and resealed everything with dow corning . Now I have a tic tic tic from the HV supply and crazy pix . If I have a bad HV unit I am seriously thinking of giving CRT PJ's away , I'm just sick of this sh*t and want to relax and watch a movie !!!!!!

Mark_A_W · Posted: Thu Apr 29, 2010 4:42 am Post subject:

Chucky, one of your leads in the Splitter isn't seated properly.

If it's one colour, it's the corresponding output, if it's all it's the input connection.

CZ Eddie · Joined: 23 Mar 2006 Posts: 1601 Location: Austin, TX

SweetChuck · Posted: Thu Apr 29, 2010 9:35 am Post subject:

Mark_A_W · Posted: Fri Apr 30, 2010 12:09 am Post subject:

Russ and I did the same thing when we were fixing his XG LC.

huggy · Posted: Fri Apr 30, 2010 2:02 am Post subject:

Mark_A_W · Posted: Fri Apr 30, 2010 4:57 am Post subject:

Yeah, well, he has a new shiny toy doesn't he?

cmjohnson · Joined: 03 Apr 2006 Posts: 5180 Location: Buried under G90s

I think you need a new splitter in any case. If it was ever hissing or spitting, it certainly now has some internal arcing damage and yoiu would be better off to simply replace it. It's not like that's a tough job.

CJ