CurtPalme.com Home Theater Forum

redfox001 · Joined: 16 Mar 2009 Posts: 2257 Location: The Netherlands

redfox001 · Joined: 16 Mar 2009 Posts: 2257 Location: The Netherlands

When I look at the HD unit I see no burned mosfets. Also if there was one mosfet burned than there would have been a report of scanfail and the led would have turned red on the SMPS2.

So if the HD unit is still correct than what is burned and why is the HV shutdown?

Also the EHT still seems correct, there is no red led on it so perhaps the HV is not shut down?

So perhaps the RGB driver performs a spotkill and blanking because the deflection coil has burned?

redfox001 · Joined: 16 Mar 2009 Posts: 2257 Location: The Netherlands

Well f*cking f*cking f*cking miracle!!!!!

I replace the EHT. About the only spare part I have and it turns on again!!! Very Happy

redfox001 · Joined: 16 Mar 2009 Posts: 2257 Location: The Netherlands

Rethinking. There where some log entries about HV fail in the Cine MAX very recent. Also the splitter has been replaced. Perhaps this EHT was bad all the time and it was just a coincidence that it failed?

Could a bad quadrupler or splitter kill an EHT? In other words do I risk my EHT?

btw it is not the fuse on the EHT I checked that as a first thing.

Hulio · Joined: 15 Apr 2006 Posts: 494 Location: Belgium

I just wanted to post that i can help you with spare parts ( not for sale, only to indentify the fault ) but i see you sorted out already. I'm glad it's working again.
It is very possible that the red led on the EHT was already lit, but that can be seen only trough those two holes on the metal heat sink ( black with white warning text on it ).
Still guess the EHT went down due to scan switching with power on.

**Curt Palme** · Posted: Thu Apr 03, 2014 2:02 pm Post subject:

A bad part in the HV section can take out the EHT board, but it's not likely. It most likely was the spark/arc that you talked about earlier.

I can fix that EHT board for you if you want.

redfox001 · Joined: 16 Mar 2009 Posts: 2257 Location: The Netherlands

I still can't believe it. The red led of the EHT really was off. I checked through the holes. Than I followed a hunch (how do you call that) and replaced the EHT.

So likely a spark caused this. Perhaps the spark was caused bij the connectors attached wrong. There where HV fails in the log so she probable sparked more or is this normal for a Cine MAX?

Perhaps a good idea to fix the EHT to keep the number of spare parts constant Very Happy

I will come back on that later.

Thanks everyone for helping!!!

But the most important question. Who knows a cross pattern I mean a large cross to align the tubes. I would like to have a jpg or so because I don't use windows. Nokia testpatterns all seem to be windows exe files. The only testpatterns I have right now are the AVSHD but there does not seem to be a cross pattern
http://www.avsforum.com/t/948496/avs-hd-709-blu-ray-mp4-calibration

I can try to use the internal pattern but there is a conflict with the hdmi as I mentioned before. Not a big problem but perhaps someone has the Nokia in separate images or so?

**Curt Palme** · Posted: Thu Apr 03, 2014 3:16 pm Post subject:

Despite the newness of the CineMax, it's still about 10 years old, and parts can fail. Smile

There are many ways an EHT board can fail without blowing the fuse or having those red lights turn on. I've repaired dozens of those so far on all Barco models.

Hulio · Joined: 15 Apr 2006 Posts: 494 Location: Belgium

C1 and C2 on AVSHD are in fact very good crosshatch patterns.
Use C1 for geometry and convergence and C2 for astig. adjustments. There you have one pixel dots.

redfox001 · Joined: 16 Mar 2009 Posts: 2257 Location: The Netherlands

Ok than I'll use these patterns. This is where I am right now. Hopefully next pictures will be screenshots!

redfox001 · Joined: 16 Mar 2009 Posts: 2257 Location: The Netherlands

redfox001 · Joined: 16 Mar 2009 Posts: 2257 Location: The Netherlands

By the way the Cine MAX makes a peeping sound. Very high pitch. It had that all the time and seemed to get somewhat less with time. I hope it does not indicate a SMPS on its end?

Bye the way 2 it seemed to come on very bright and I had to readjust contrast and brightness. Is this my imagination or can an EHT do something about the HV and brightness/contrast?

redfox001 · Joined: 16 Mar 2009 Posts: 2257 Location: The Netherlands

One other question. Can I assume that the EHT in the 809 is tuned in the same manner as the EHT in the Cine MAX? Both EHT's have the same version number R7627165-04 for the old in the MAX and R7627165-02 for the new.

For one thing the version number of the 809 quadrupler is R762717 and of the Cine Max is R763368. Does this matter?

Hulio · Joined: 15 Apr 2006 Posts: 494 Location: Belgium

The EHT's are the same. Part number matters, revision number not realy.
The quad from your 809 is a new version used in 808 and 1208 series. IIRC, electronicaly will work with CineMax but must be mod. to fit.
Curt can say with certitude.

redfox001 · Joined: 16 Mar 2009 Posts: 2257 Location: The Netherlands

**Curt Palme** · Posted: Thu Apr 03, 2014 10:50 pm Post subject:

Oh trust me, I was really nervous when I started working on the 909 sets, with only the service manual on CD ROM, no spare modules or parts, and no theory of operation. It got worse when I slid the tray with the expensive controller board in SLIGHTLY crooked, and the set died completely. Turned out one whole row of module contacts got bent over on the controller board, something that has happened more than once with those stupid trays. if you're even slightly crooked when pushing the board in, it can/will happen.

Once I get to know the sets, I now throw them around like Barco 800s. Smile

CasetheCorvetteman · Joined: 09 Nov 2008 Posts: 6326 Location: Australia

**Curt Palme** · Posted: Fri Apr 04, 2014 12:31 am Post subject:

you break 'em, I fix 'em! Smile

thanks to the US military, I now have a bunch of spare 909 boards incl convergence, astig, focus, H output and SMPS boards....

redfox001 · Joined: 16 Mar 2009 Posts: 2257 Location: The Netherlands

This Cine MAX has 7000 hours and is from februari 2002. The RGB driver the splitter and the port 3 hdmi are replaced parts but the rest is original and all the numbers match so the controller is original too.

About the EHT I am thinking that obvious the high voltage is there and since the red led is not on the high voltage must be correct so the splitter and the quad must be correct. No need to replace them.

About misplacing the scan connector. The coil wires are on the outside so if I misplace one the coil will be a lose wire that wil nog hurt the electronics and the small wire will just tell act as if the connector is upside down. So the only thing that happens is that the scan will fail. The deflection module will know this because there is no feedback from the coil and a scan fail will shut the EHT and G2 down at least.

That is what should have happened in my opinion. Than why did the EHT chain spark? Did this fault condition that is pretty normal make a wrong voltage and kill the EHT causing the voltage on the splitter to rise and spark?

I think I have to be very careful with fault conditions on this Cine MAX?

redfox001 · Joined: 16 Mar 2009 Posts: 2257 Location: The Netherlands

Anyway the EHT will probable go to Curt with a lot of other EHT's from someone else. Perhaps than Curt can tell what realy happened in this Cine MAX afair Very Happy