CurtPalme.com Home Theater Forum

bluemoonhu · Joined: 16 Feb 2021 Posts: 259

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！

bluemoonhu · Joined: 16 Feb 2021 Posts: 259

PWC= SMPS，Main Power Supply

**kal** · Posted: Mon Sep 06, 2021 3:39 pm Post subject:

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

RGB output amplifier looks like this:

Kal

**kal** · Posted: Mon Sep 06, 2021 3:42 pm Post subject:

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

bluemoonhu · Joined: 16 Feb 2021 Posts: 259

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

bluemoonhu · Joined: 16 Feb 2021 Posts: 259

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

**kal** · Posted: Tue Sep 07, 2021 1:45 am Post subject:

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:
https://www.curtpalme.com/forum_archived/viewtopic.php@t=36346.html

Kal

**Curt Palme** · Posted: Tue Sep 07, 2021 1:57 pm Post subject:

I believe so. Try it.

bluemoonhu · Joined: 16 Feb 2021 Posts: 259

The SMPS board is repaired。

Thanks