CurtPalme.com Home Theater Forum

[drudozucker]

Hi all, my Barco Cine 9 developed a strange fault which I hope one of you have seen before. Whilst watching I suddenly heard a "bang" (loud but not overly loud) and the Barco switched off. I waited a short time, then I restarted it. It came on without any problems but all settings had gone. I copied settings from another memory (just to see if all memories had been reset or just the one) and that worked fine. The result was as you would expect when copying a related memory. Almost there, but still requiring some touch up.

I assume the "bang" was high voltage related, but that is a guess. This is the first time this has happened (and hopefully it is the last too!). For information I had exchanged the EHT quadruppler about 100 operating hours ago, but I guess that this is unrelated because of the long running time since its change.

Can anybody explain this behavior and is there anything I should rather check before continuing to use the Barco again?

Best regards
Udo

[jask]

was there any burnt smell when you heard the bang,,, or around the set if you open the cover?

[Ile]

Could be also short inside tube. Sometimes small flake come loose from cathode material and cause short to gun assembly. See if it short again.

If it short again, there is chance that crap burn away after few hour of service menu crt run in cycles.

[drudozucker]

Hi, thanks for the responses. There was no smell and after opening the projector I couldn't see anything unusual. All LEDs are "green".

After the fault I found three entries in the projector's diagnosis memory for that operating hour. I assume they were all made at the same time? They show the same operating hour.

I am not sure what I should make out from this information. Can somebody help?

There were three entries, the second entry is shown below in (), the third in [].
If there is nothing shown in () and/or [] then the entry is identical to the one at the left

Coincidence: on
Deflection: off
SF: Y
SF vert.: N
SF hor: N
IBCC Fail: N (N) [Y]
EHT Fail: Y (Y) [N]
HD EHT: N
Fan Fail: Y (N) [Y]

Side note: I am pretty sure the fans were running as I would have heard them switching off (I had audio at very low level)

Associated Voltage diagnosis were:
The third entry was identical to the second, hence omitted
I added the values I am now reading at the end after N=

17V: 9.4 14.1 N=16.7
-17V: -11.8 -10.9 N=-17.2
9V: 5.6 9.1 N=11.9
+12V: 5.3 7.1 N=12.3
-12V: -4.8 -4.3 N=-10.2
+30V: 29.3 22.9 N=30.7
-40V: -37.4 -16.5 N=-36.3
+110V: 119.7 72.3 N=118
+210V: 204.1 203 N=209.7
HTHD: 76.3 258.5 N=115.2
-CONV: -29.6 -29.6 N=-31.7
+CONV: 34.1 46.1 N=34.1
FOC LOW: 25.2 18.3 N=29.8
FOC HIGH: 35 41.5 N=41.3

Thanks for everybody's help.

Best regards

Udo