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barco cine8 PWC has failed...

 
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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Mon Sep 06, 2021 2:45 pm    Post subject: barco cine8 PWC has failed... Reply with quote


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my barco c8 PWC has failed,I checked it and found that a power amplifier tube was broken, a fuse was broken, I replaced them,I reinstalled this PWC on the machine, The c8 was normal,You can see the image, but ,two minutes later, the machine automatically shut down again, I checked the PWC again and found that another power amplifier tube was burned,The reason is that there was no silica gel between the power amplification tube and the heat dissipation plate, which makes the tube burn. I replaced the power amplifier tube again,When I installed the PwC into the machine again , I pressed the power button on the rear of the machine,the power indicator light is on, and a row of detection lights are also on, but ,the machine cannot run with the remote control。 Why is that?

Thanks!
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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Mon Sep 06, 2021 3:08 pm    Post subject: Reply with quote

PWC= SMPS,Main Power Supply
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kal
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Joined: 06 Mar 2006
Posts: 17850
Location: Ottawa, Canada

TV/Projector: JVC DLA-NZ7


PostLink    Posted: Mon Sep 06, 2021 3:39 pm    Post subject: Reply with quote

What's a 'power amplifier tube'? Do you mean a power transistor on the RGB Output Amplifier?

RGB output amplifier looks like this:



Kal

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kal
Forum Administrator



Joined: 06 Mar 2006
Posts: 17850
Location: Ottawa, Canada

TV/Projector: JVC DLA-NZ7


PostLink    Posted: Mon Sep 06, 2021 3:42 pm    Post subject: Reply with quote

err, wait, I think you're only talking about the main SMPS (R7621706) right? This here:



See all the various board names here: http://www.curtpalme.com/Zenith1200_Layout2.shtm

Kal

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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Mon Sep 06, 2021 11:29 pm    Post subject: Reply with quote

yes, the main SMPS has failed, its number is R7690205. the power amplifier on it was broken.
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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Tue Sep 07, 2021 1:12 am    Post subject: Reply with quote

I have two main SMPS boards (a R7621706 and a R7621705) , can they replace R7690205 board on barco Cine8?
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kal
Forum Administrator



Joined: 06 Mar 2006
Posts: 17850
Location: Ottawa, Canada

TV/Projector: JVC DLA-NZ7


PostLink    Posted: Tue Sep 07, 2021 1:45 am    Post subject: Reply with quote

Sorry, no idea. Someone with knowledge about the differences will have to chime in.
You can also try searching the forum for the various models to read about the differences. For example, this thread came up:
http://www.curtpalme.com/forum/viewtopic.php?t=36346

Kal

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Curt Palme
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Joined: 08 Mar 2006
Posts: 24296
Location: Langley, BC

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PostLink    Posted: Tue Sep 07, 2021 1:57 pm    Post subject: Reply with quote

I believe so. Try it.
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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Wed Sep 15, 2021 2:01 am    Post subject: Reply with quote

The SMPS board is repaired。

Thanks
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