CurtPalme.com Home Theater Forum

ziggy

Hi guys,

My green crt acts up every now and then again.The last movie I saw it displayed diagonal lines on green crt only during the movie. I apologize for the poor picture.I had to take it looking into the lenses.The diagonal lines are just now appearing, before then the green crt would kind of flicker and the raster would be outside the normal screen area that it was setup for. This is the only problem Ive had since Ive owned the projector?

Any suggestions?
thanks
Edwad Zigmond

Tom.W · Joined: 09 Mar 2006 Posts: 6635

Bad 2SK511 FET on the video amp board. If you are starting to loose one you might as well replace all three....

Tom.W · Joined: 09 Mar 2006 Posts: 6635

Another thread.

http://www.curtpalme.com/forum/viewtopic.php?p=175335

If Curt is out I have a few new 2SK511 spares.

It could also mean the thermal heat sink compound on the FET has gone bad...

**Curt Palme** · Posted: Sun Mar 28, 2010 3:20 pm Post subject:

Or I can repair them. Replace all three, the other two are close behind.

ziggy · Posted: Sun Mar 28, 2010 4:12 pm Post subject:

Curt,
Do I send in the old ones and you fix/or send repaired ones back,also what is the cost and procedure for taking the old ones out?>

Thanks guys
Ed

Tom.W · Joined: 09 Mar 2006 Posts: 6635

Read this...

http://www.lynxxx.nl/barco/fet.asp

The site was down last night so I waited to post it.

ziggy · Posted: Tue Jun 21, 2011 5:33 pm Post subject:

Hey everyone,

Its doing it again. The green board retrace error. I swapped the green with the red and it followed it. It was replaced about a year ago. Any suggestiosn?

Thanks

**Curt Palme** · Posted: Tue Jun 21, 2011 5:49 pm Post subject:

$35 incl return shipping to repair it. I've got 2 transistors left to fix these. DO NOT continue to run the set, you can spot burn the tube.

dvh99 · Joined: 25 Dec 2009 Posts: 2158 Location: nederland

http://nl.mouser.com/ProductDetail/Vishay/IRFU214PBF/?qs=cvaI6ThkwxvgvymODFH6CA%3d%3d

wouldn`t these work?

watch out for incorrect placement because of different pinout, source-drain-gate vs gate-drain-source.

the 2sk511 is when looking at the front from left to right sdg.

**Curt Palme** · Posted: Tue Jun 21, 2011 6:02 pm Post subject:

If you want to take the chance to spot burn a tube, you go ahead. I don't recommend that the end user with no spare tubes do this.

ziggy · Posted: Tue Jun 21, 2011 6:30 pm Post subject:

Ill send it in to get it fixed Curt, I think I have the mailing address.What parts do you have for this unit to keep it running on a tight budget? any good tubes left?

Ziggy

DolbySR · Joined: 08 Jun 2011 Posts: 47 Location: Switzerland

I have a complete set of parts of a working BG800 with 4500h here at my place - if you're interested, write me a message.

**Curt Palme** · Posted: Tue Jun 21, 2011 11:12 pm Post subject:

Ziggy, I'm selling most of the Barco 800 boards at $10 each. Convergence, video output. power supply and HV stuff not included. Thing is, I would not mess around with used video output boards since they can nuke tubes. I do have one or two brand new R and G tubes at $35 each, no blues, sorry!

Tom.W · Joined: 09 Mar 2006 Posts: 6635

ziggy · Posted: Wed Jun 22, 2011 1:14 am Post subject:

Curt

would the price for the new tubes include shipping?

Ziggy

**Curt Palme** · Posted: Wed Jun 22, 2011 3:35 am Post subject:

Sorry no, not at that price, but shipping to you will be cheap, say $15 per tube or something like that?

ziggy · Posted: Wed Jun 22, 2011 3:56 am Post subject:

ill send an email with a list

thanks

ziggy · Posted: Mon Jul 04, 2011 7:27 am Post subject:

Curt,

What other components do I need to possibly replace if i get those new tubes from you?

Ziggy

Tom.W · Joined: 09 Mar 2006 Posts: 6635

Have Curt replace all three of the 2SK511 video amps with new ones...

ziggy · Posted: Sat Oct 22, 2011 10:04 pm Post subject:

Curt,

Im late on mailing the bad board to you but wanted to know if this problem Im seeing also is the same thing, i.e. the chip going bad.

Thanks

Ziggy