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alyle5864
Joined: 13 Mar 2006
Posts: 112
Location: Monroe, Wa
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| Posted: Fri Mar 16, 2012 11:13 pm Post subject: Help troubleshooting 9PG |
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I need some help trouble shooting my 9PG. I've attached a video to show whats going on. What's happening is the image on the tubes are pulsating back and forth. I've replaced the system board, pulled the point and video decoder boards with no change. No error code is displayed either. Anyone have any ideas??
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I want to be like Curt when I grow up! Got no theater, all projectors broke.
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Fri Mar 16, 2012 11:16 pm Post subject: |
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If you have a spare, swap out the deflection board. If the set's been sitting there a while, I'd suspect bad caps.
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alyle5864
Joined: 13 Mar 2006
Posts: 112
Location: Monroe, Wa
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| Posted: Fri Mar 16, 2012 11:20 pm Post subject: |
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Only other one I got is missing a transistor and I'm too broke to hunt down another. Got to sell my 808 parts to pay for it.
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I want to be like Curt when I grow up! Got no theater, all projectors broke.
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sat Mar 17, 2012 10:13 am Post subject: |
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So take the transistor from the other DEF board!! 
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Sat Mar 17, 2012 12:42 pm Post subject: |
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Anthony, I have a deflection board here, and it has a new genuine toshiba transistor. (the common one that fails).
Again I cannot guarantee the board will work, but if You want it I would be willing to sell that to you for $25 shipped.
Hope I can be of some assistance 
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alyle5864
Joined: 13 Mar 2006
Posts: 112
Location: Monroe, Wa
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| Posted: Fri Mar 23, 2012 4:56 am Post subject: |
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Well, got a Deflection board and system board from Jeremy112. Swapped both out, no change, still get pulsing image on the tubes. SO its not the SYS, Def, V4, or Point board. Guess its time to part out the tubes.
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I want to be like Curt when I grow up! Got no theater, all projectors broke.
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sat Mar 24, 2012 2:03 am Post subject: |
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I just watched that video, do you have a signal going into this projector while its doing this??
Before you go parting it out, mark the H OUT pot on the DEF board so you know where it was, and try adjusting it slowly. This may even fix the problem...
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alyle5864
Joined: 13 Mar 2006
Posts: 112
Location: Monroe, Wa
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| Posted: Sat Mar 24, 2012 9:40 pm Post subject: |
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I checked the HOT voltage with a video signal and it was 2.5v, readjusted it back to spec (2.0 +-1v). No change.
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sun Mar 25, 2012 12:32 am Post subject: |
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So no change when you just adjust it either way??
Pull the WAVE board out and see what the capacitors look like down near the bottom.
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alyle5864
Joined: 13 Mar 2006
Posts: 112
Location: Monroe, Wa
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| Posted: Sun Mar 25, 2012 1:32 am Post subject: |
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Okay, pulled out the wave board and I can not see any visual signs of component failure. Just for the hell of it I powered up with the Wave board out. Menus are stable, test patterns were stable, no more oscillation of the display. Looks like maybe a bad Wave board.
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I want to be like Curt when I grow up! Got no theater, all projectors broke.
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sun Mar 25, 2012 1:41 am Post subject: |
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Yeah, im supprised it worked without the WAVE board... There is a few 100uF caps at the bottom, and if they are the originals, they are bound to be leaking. The rest on the board will also be very likely to be leaking. They leak and damage the board.
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