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Barco 708MM “HOLD DOWN EHT” fault
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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Sat Apr 23, 2022 2:38 am    Post subject: Barco 708MM “HOLD DOWN EHT” fault Reply with quote


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Such the fragile tube!



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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Sat Apr 23, 2022 2:50 am    Post subject: Barco 708MM “HOLD DOWN EHT” fault Reply with quote

Hulio wrote:
Are the tubes P16LNG22 ? If yes, I know a cheap set in good shape.
Are you located in Hungary ?


Yes! I am in China
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Hulio




Joined: 15 Apr 2006
Posts: 469
Location: Belgium


PostLink    Posted: Sat Apr 23, 2022 6:47 am    Post subject: Reply with quote

Here, on e-bay Germany, a green tube in good shape for only 30€, shipping not included. He has 2 sets of tubes, I believe.
The guy is to be trusted, I know him (bought several items from him in the past). Send him a message.
https://www.ebay.de/itm/144339474582?hash=item219b4d9896:g:xKsAAOSwReBhvhXg
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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Sat Apr 23, 2022 9:44 am    Post subject: Reply with quote

Hulio wrote:
Here, on e-bay Germany, a green tube in good shape for only 30€, shipping not included. He has 2 sets of tubes, I believe.
The guy is to be trusted, I know him (bought several items from him in the past). Send him a message.
https://www.ebay.de/itm/144339474582?hash=item219b4d9896:g:xKsAAOSwReBhvhXg


Do you have the RGB driver board of BG 808s ?
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Hulio




Joined: 15 Apr 2006
Posts: 469
Location: Belgium


PostLink    Posted: Sat Apr 23, 2022 6:21 pm    Post subject: Reply with quote

No, sorry. Myself, I use a Barco Cine 9.
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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Sun Apr 24, 2022 2:46 am    Post subject: Barco 708MM “HOLD DOWN EHT” fault Reply with quote

Hulio wrote:
No, sorry. Myself, I use a Barco Cine 9.



very rare machine! Please look at the PM。
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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Thu May 26, 2022 2:41 am    Post subject: Reply with quote

There are new problems again. In order to save this 708, I bought a faulty C7. The deflection board in this C7 is faulty. I used the deflection board in 708 to replace C7. as a result, the deflection board of 708 was burnt out。
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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Thu May 26, 2022 3:37 am    Post subject: Barco 708MM “HOLD DOWN EHT” fault Reply with quote

C7 and 708mm


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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Thu May 26, 2022 3:41 am    Post subject: Barco 708MM “HOLD DOWN EHT” fault Reply with quote

When I reinstalled the deflection board of 708 back to 708, there was a fault light and the machine could not run


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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Thu May 26, 2022 3:44 am    Post subject: Barco 708MM “HOLD DOWN EHT” fault Reply with quote

SF---deflection board fault


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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Thu May 26, 2022 3:54 am    Post subject: Barco 708MM “HOLD DOWN EHT” fault Reply with quote

I checked the deflection board electric resistance and found that the resistance values of the two resistors could not be measured. have they been burned?


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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Thu May 26, 2022 3:56 am    Post subject: Barco 708MM “HOLD DOWN EHT” fault Reply with quote

Resistance I


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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Thu May 26, 2022 3:57 am    Post subject: Barco 708MM “HOLD DOWN EHT” fault Reply with quote

Resistance 2


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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Thu May 26, 2022 4:00 am    Post subject: Reply with quote

Where is the deflection board of 708 most likely to fail? thank you!
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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Thu May 26, 2022 4:01 am    Post subject: Barco 708MM “HOLD DOWN EHT” fault Reply with quote

the deflection board of 708


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Hulio




Joined: 15 Apr 2006
Posts: 469
Location: Belgium


PostLink    Posted: Thu May 26, 2022 10:36 am    Post subject: Reply with quote

Keep in mind that not all boards from 708 can be swapped with the ones from C7.
Should your 708 be a data grade, yes. I guess yours is a vision version.
The best way to find out, is to check the part number on the module sticker (R762XXX). A C7 deflection board is R7627625, while the one from the 708 is R762447. Thus, not compatible.
I would try to revive the C7, instead of the 708 (newer components, higher bandwidth, more inputs etc).
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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Thu May 26, 2022 1:25 pm    Post subject: Barco 708MM “HOLD DOWN EHT” fault Reply with quote

Hulio wrote:
Keep in mind that not all boards from 708 can be swapped with the ones from C7.
Should your 708 be a data grade, yes. I guess yours is a vision version.
The best way to find out, is to check the part number on the module sticker (R762XXX). A C7 deflection board is R7627625, while the one from the 708 is R762447. Thus, not compatible.
I would try to revive the C7, instead of the 708 (newer components, higher bandwidth, more inputs etc).



The 708 is vision 708mm.

yes! I know they had a different number, but they looked almost the same, so I exchanged them. I am sorry!
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kal
Forum Administrator



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

TV/Projector: JVC DLA-NZ7


PostLink    Posted: Thu May 26, 2022 2:27 pm    Post subject: Re: Barco 708MM “HOLD DOWN EHT” fault Reply with quote

bluemoonhu wrote:
Resistance 2

That's a diode, not a resistor.

Kal

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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Thu May 26, 2022 3:08 pm    Post subject: Re: Barco 708MM “HOLD DOWN EHT” fault Reply with quote

kal wrote:
bluemoonhu wrote:
Resistance 2

That's a diode, not a resistor.

Kal




Where is the fault?

Thanks!
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bluemoonhu




Joined: 16 Feb 2021
Posts: 228



PostLink    Posted: Thu May 26, 2022 3:08 pm    Post subject: Re: Barco 708MM “HOLD DOWN EHT” fault Reply with quote

kal wrote:
bluemoonhu wrote:
Resistance 2

That's a diode, not a resistor.

Kal




Where is the fault?

Thanks!
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