CurtPalme.com Home Theater Forum

ReTrO · Joined: 08 Feb 2010 Posts: 28 Location: London, UK

I have a Marquee 9500LC Ultra donated by a customer that is fitted with a Moome HDMI card (fitted around June 2012). It was donated to me as it refused to switch on one day and the customer thinks it is related to voltage issues with the Moome card, which I believe may be slightly different now to prevent this, or requires a resistor/diode or more to be replaced. I did have a hunt around at the time I received the unit to see if I could find a fix but without any luck.

Regardless it has been quite some time since I had my Barco Data 600 and I need to either fix this up or move it on.

Does the Moome issue sound familiar? I did a brief search and scan on here before posting this and couldn't see anything blatantly obvious (I'm happy to be corrected though).

I'm in the UK and the old CRT servicing guys I used to deal with aren't contactable or in the business anymore. I previously worked for Marata Vision and we were the Marquee distributors back in the early 2000's.

barclay66 · Posted: Thu Nov 14, 2013 4:02 pm Post subject:

Hi,

Could You specify the problem more into detail please?
Is it that the Marquee doesn't switch on or do only the Moome card's light stay dark?
In the first case it would be easy removing the Moome card and see if the PJ powers up then. In the second case it might be possible to try a spare Moome card (if You have one) or to send Yours to some other Marquee owner for testing.

Regards,
barclay66

ReTrO · Joined: 08 Feb 2010 Posts: 28 Location: London, UK

The unit is in storage at the moment, so I'll wheel it out and give it a run to confirm asap.

draganm · Joined: 08 Mar 2006 Posts: 8990 Location: Colorado

the odd's of a bad Moome card keeping the PJ from powering up are pretty close to Zero, there or are no diodes or resistors to replace.
More than likely you have either an oxidized connection somewhere in the chassis or a bad high voltage power supply. We need a more detailed explanation of what's happening. Do the fans kick on? Is there an error light on the back of the machine, lower control opposite the RGB input board? Looking through the front grill, can you see any red error lights on the power supply that the power chord plugs into?
My money's on an oxidized connection on the horizontal deflection module between the main board and the small daughter board, a 10 minute fix.

ReTrO · Joined: 08 Feb 2010 Posts: 28 Location: London, UK

Thanks for the posting. I've got the unit home now and will give it a run over the weekend to see what I can determine.

ReTrO · Joined: 08 Feb 2010 Posts: 28 Location: London, UK

Ok, I have power connected and a yellow LED lit on the standby indicator.
Pressing power on the remote gives me a blinking red on the C LED and causes the LVPS red LED to come on and stay on until hard powered off at the mains.

barclay66 · Posted: Thu Nov 21, 2013 9:40 pm Post subject:

Hi,

So it looks like a LVPS error. Either the LVPS is bad or there's a short on one of the boards that causes the LVPS to shut down.
Now take off the panel at the front (where the mains connector is) and look for one or more lit red LEDs and report back which (if any) one is on...

Regards,
barclay66

ReTrO · Joined: 08 Feb 2010 Posts: 28 Location: London, UK

Thank you for the help so far. Smile

Front panel off and I have both cooling fans spinning but no lit up LEDs at any time.

barclay66 · Posted: Thu Nov 21, 2013 11:34 pm Post subject:

OK,

Do the LEDs stay off no matter if You switch the set on and off via the remote?
If Yes (and with the LVPS error LED on at the CLM) then it looks more like a defective LVPS. Try with a spare if You have one at hand. Maybe someone (Curt?) can confirm my findings...

Regards,
barclay66

ReTrO · Joined: 08 Feb 2010 Posts: 28 Location: London, UK

Yup the LEDs all stay off regardless of the on status of the projector (in theory of course).

**Curt Palme** · Posted: Thu Nov 21, 2013 11:56 pm Post subject:

In order for the fans to turn on in the belly of the unit, all that needs to be installed is the LV power supply and the CLM processor board with those red error LEDs on it. You can pull out and disconnect all other boards to see if the LVPS light will go out and the set will respond to the remote.

Worst case one of the tubes leaked glycol, and poured out onto the motherboard and smaller vertical backplane in the set. Best case, one board has a short on it, causing the set to stay shut down. By disconnecting it, the set should power up, but you won't get a picture of course.

If nothing gets the unit running, you'll need to pull out the CLM board and LVPS and send them to me for testing/repair.

barclay66 · Posted: Thu Nov 21, 2013 11:58 pm Post subject:

Well, then it looks like the LVPS still can supply StandBy power (for the CLM), but the main rails don't power up when the LVPS receives the Power_On signal from the CLM.
There's a remote chance that the CLM is the culprit, but a failure of the LVPS is much more likely.
I'd remove it, open it (careful with the upper and lower PCB connectors!) and check the fuse(s) that are visible. If all checks out OK, I'd try with a different LVPS...

Regards,
barclay66

ReTrO · Joined: 08 Feb 2010 Posts: 28 Location: London, UK

I'll have a further check on Saturday to see what I can find out. Thanks for all the help guys, much appreciated.

barclay66 · Posted: Fri Nov 22, 2013 8:15 am Post subject:

ReTrO · Joined: 08 Feb 2010 Posts: 28 Location: London, UK

I can see the 2 fans in the front on the psu going round, I haven't checked for any others, but I don't think others are turning. It's quite quiet still.

ReTrO · Joined: 08 Feb 2010 Posts: 28 Location: London, UK

It's been a while since I had some spare time so have only just looked at the projector again today. I've removed all the rear board bar the main board as suggested and still getting the red LVPS LED coming on. I'm going to try and check the fuses next.

ReTrO · Joined: 08 Feb 2010 Posts: 28 Location: London, UK

Right, LVPSU out, opened and dusted (it had 14 years of dust in it, looks like the projector was made in 1999 from all the date stamps, although some on the chassis say 1994).

I heard a rattling sound on removing the LVPSU and have found half a power transistor floating around, might be all/part of the cause. See photo attached.

Is it worth me simply replacing it and testing it again?

**Curt Palme** · Posted: Sun Dec 01, 2013 3:09 pm Post subject:

Try that, but it most likely has other issues in it. If you need another LVPS or PC board out of it, let me know.

ReTrO · Joined: 08 Feb 2010 Posts: 28 Location: London, UK

I'm hoping this part will be suitable.

http://cpc.farnell.com/vishay-formerly-i-r/irfp450apbf/mosfet-n-500v-14a-to-247ac/dp/SC10645?Ntt=irfp450

ReTrO · Joined: 08 Feb 2010 Posts: 28 Location: London, UK

Spare fuses and parts on order. Will hopefully be able to update again on Tuesday.

Many thanks for all the help so far. Smile