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banzairun
Joined: 10 Jul 2006
Posts: 129
Location: NJ
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| Posted: Wed Apr 14, 2010 3:22 am Post subject: BD708 no video |
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I have BD708 ECC PFC (whatever that is) that has no picture whatsoever. It's a low hour machine and was working fine, naturally, and still otherwise powers up like it should with all greens lit and no red LEDs, sounds like it locks to sync, etc.
I realize this thing isn't worth squat but I'd rather fix it than swap it with another one of the strays since it's on my 13' shop ceiling and is a nice late model machine (Dec 2003) with clean CRTs. I have a BD708 parts machine that I swapped out the input board with and it's doing the same thing. Can anything else really cause this or do I really have 2 bad input boards? Should I swap the G2/focus block?
I noticed that I left out the airflow guide that sits on top of the supply tray since I last worked on the machine, so maybe excess heat had something to do with this..
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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: Wed Apr 14, 2010 3:46 am Post subject: |
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Do you get the internal menus up?
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banzairun
Joined: 10 Jul 2006
Posts: 129
Location: NJ
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| Posted: Wed Apr 14, 2010 11:37 pm Post subject: |
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No curt.. the CRT's are "dead"
I have HV & heater.. if the video board is bad I should at least still be able to turn up G2 to see a raster when looking in the lenses, correct? I get nothing. I'm suspecting the pot block or possibly the supply at this point.
the pot blocks look completely different but both projectors use P16s so I assume they're interchangeable? Are the supplies swappable in these units? They look completely different as well between the '03 on the ceiling and the '01 unit I have for parts (that should otherwise work, it was dropped and cracked a tube neck).
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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: Thu Apr 15, 2010 2:20 pm Post subject: |
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No, I'd suspect a problem on the video input board. I can fix yours, or chances are I have a working one in stock for $90 incl shipping. That's probably cheaper than you sending that one in for repair.
With no error LEDs on the front and all greens, that's most likely it if you can hear the HV.
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