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BD808 powers up, tubes dark

 
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Belcherwm



Joined: 19 Aug 2006
Posts: 112
Location: Haymarket, Northern Va.

Posted: Sat Jan 12, 2008 1:23 am    Post subject: BD808 powers up, tubes dark

Need a little help/direction.

PJ powers up just fine, but the tubes stay dark. A few weeks before this happened the signal lock/resolution seemed to jump from something like 33.3 to 120 and then back on bright or all white scene transitions.

Lights on the access door are StdBy, Main Power, Proccesor cycles (pulsing), and Block Match.
I'm getting a signal lock on both s-video and port 5. I'm not seeing any other "red" lights.

I've switched out, one at a time, the H shift, Hor., and Vert. boards.

No change. What should I try next? EHT?

Thanks

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Bill
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Tom.W



Joined: 09 Mar 2006
Posts: 6635


Posted: Sat Jan 12, 2008 1:44 am    Post subject:

Can you hear the static noise come up on the high voltage. No Red LED on the EHT module ?
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Belcherwm



Joined: 19 Aug 2006
Posts: 112
Location: Haymarket, Northern Va.

Posted: Sat Jan 12, 2008 1:59 am    Post subject:

Don't hear the static, I know what you are talking about. There is a red light that I can see on EHT.

Swapped the EHT out and red light on that one too.

I'm going to swap out the splitter and quadrupler next.

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Bill
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Tom.W



Joined: 09 Mar 2006
Posts: 6635


Posted: Sat Jan 12, 2008 3:48 am    Post subject:

Good plan try the quad first.
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Belcherwm



Joined: 19 Aug 2006
Posts: 112
Location: Haymarket, Northern Va.

Posted: Sat Jan 12, 2008 3:50 am    Post subject:

Quad it was. I'm back in business!!

Can a quad be repaired?

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Bill
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r.bauer



Joined: 08 Apr 2006
Posts: 280
Location: The Netherlands

Posted: Sat Jan 12, 2008 4:00 am    Post subject:

A Quad can not be repaired. Dump it.
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Tom.W



Joined: 09 Mar 2006
Posts: 6635


Posted: Sat Jan 12, 2008 5:11 am    Post subject:

Just find a spare.
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Curt Palme
CRT Tech


Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC

TV/Projector: All of them!

Posted: Sat Jan 12, 2008 7:42 am    Post subject:

Yes a quad can be repaired. I'm working with a local guy that has had a 50% success rate so far! If you're going to throw it out, pls donate it to me, as this guy needs as many as he can get to work on. I'll cover shipping. Shoot me an email to curtpalme@shaw.ca
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Tom.W



Joined: 09 Mar 2006
Posts: 6635


Posted: Sat Jan 12, 2008 2:21 pm    Post subject:

What is he using for the potting compound ?

http://www.coolcircuit.com/circuit/voltage/
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Curt Palme
CRT Tech


Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC

TV/Projector: All of them!

Posted: Sat Jan 12, 2008 4:33 pm    Post subject:

I don't know. Not sure if he'd give up the info either. Looks like RTV silicone, but a lot of stuff like that looks like RTV silicone..Smile
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