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bazac
Joined: 19 Mar 2011
Posts: 14
Location: London
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| Posted: Sat Mar 19, 2011 6:30 pm Post subject: Barco Cine 7 Power Supply Issues |
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Hi
i have a Barco Cine 7 and it has been perfect for years and now there are no diagnostic LEDs or standby LED at all on the front. Have checked all fuses and are all good spoke to the guys in Belgium but they've got no CRT guys anymore.
Done some testing and found i have no 9V supply to the controller board disconnected all boards from the PS and still only 1.4 V at the connector on the PS that goes to the controller board. The main bulk of the PS seems to be running at 525V AC is this correct ? Changed out the regulator chip (SFH601-3) for the controller board but still only 1.4 V so i assume something must be dragging the voltage down. I have a complete spare Cine 7 with a completely blown power supply but all the boards and tubes are good. Am i right in thinking the controller board should always be powered or does this board regulate the PS voltage to it ? Any help would be appreciated Thanks
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Sat Mar 19, 2011 6:57 pm Post subject: |
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If you're interested, I have working Barco 708 SMPS at $50 plus about $70 shipping. The 708 power supply will work in the Cine 7 unit. That's probably cheaper than continuing to trying to repair it.
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bazac
Joined: 19 Mar 2011
Posts: 14
Location: London
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| Posted: Sat Mar 19, 2011 7:03 pm Post subject: |
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Hi
is it definatley the PS gone ? is it a common fault ? and not something else on one of the other boards ? should there be 9V at that connector if yes then will prob grab that PS off you
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bazac
Joined: 19 Mar 2011
Posts: 14
Location: London
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| Posted: Sat Mar 19, 2011 7:26 pm Post subject: |
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Also if i short the standby jumper projector powers up but i get the hold down EHT red led on and a ticking noise
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Sat Mar 19, 2011 7:56 pm Post subject: |
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It sounds like you have multiple problems in the set.
1) THe standby supply is bad
2) You had an HV arc somewhere (or a shorted/imploded tube) that caused a failure in the HV circuit, or the arc took out the standby supply. You now either need more boards, spare parts or a tech with a scope and meter to troubleshoot further. Multiple failure problems can be frustrating, but it really sounds like that's what you have now.
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bazac
Joined: 19 Mar 2011
Posts: 14
Location: London
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| Posted: Sat Mar 19, 2011 8:15 pm Post subject: |
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ive got a whole spare cine 7 here with a blown PS so which boards would cause the problem also +HTHD led is off
thanks Curt for your time if i get the thing fired up and working with the standby jumper in place ill have that PS off you
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Sat Mar 19, 2011 8:56 pm Post subject: |
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Check the tubes for cracks. I'd guess the HV quadrupler on the power supply is bad. Try swapping it over, or see where the tick is coming from, that could be an HV arc, so be careful.
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bazac
Joined: 19 Mar 2011
Posts: 14
Location: London
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| Posted: Mon Mar 21, 2011 6:56 pm Post subject: |
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Hi Curt sorry for the delay was away the weekend ! checked the tubes all are good swopped out the Quadrupler still no luck all 3 cannons at the yokes are making a very quiet ticking noise you have to put your ear close to hear it also have the hor ampl red led lit up on the top of the deflection board and the red sf led is on red on the front diagnostics have tried swopping all the boards on the lift up frame still no joy  any other ideas
Thanks
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Mon Mar 21, 2011 7:34 pm Post subject: |
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I'm guessing the deflection board is bad then. I've got those at $50 plus shipping.
Cheers!
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bazac
Joined: 19 Mar 2011
Posts: 14
Location: London
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| Posted: Mon Mar 21, 2011 8:41 pm Post subject: |
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just changed the deflection processor and video input boards an she fired up ! makin progress !! no picture still but squigly lines in the bottom of all tubes
gonna need the PS off you for definate any ideas on the squigly lines in the bottom of the tubes and no picture
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bazac
Joined: 19 Mar 2011
Posts: 14
Location: London
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| Posted: Tue Mar 22, 2011 8:13 am Post subject: |
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Hi Curt do you want me to pay you for the PS but hold the shipping as i might need another board or something ? at least that way you will know im not trying to get info off you for free or wasting your time ! just wanna get this cine 7 back to its former glory !! must be close now as the cannons are firing up as i said above.
Cheers
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bazac
Joined: 19 Mar 2011
Posts: 14
Location: London
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| Posted: Wed Mar 23, 2011 7:31 am Post subject: |
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Can anyone help anymore with this problem ?
Thanks
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Wed Mar 23, 2011 12:46 pm Post subject: |
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I have lots of boards, so no worries there. Now I'd say your video input board is bad. You'd need to send me that one for repair, as they do differ between sets. I'd need the 762XXX part number off it, I might have a spare, but I doubt it.
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bazac
Joined: 19 Mar 2011
Posts: 14
Location: London
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| Posted: Thu Mar 24, 2011 7:39 pm Post subject: |
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Hi Curt
Part nuber is 7627665 have swopped it out for the spare but still the same but both could be bad ! could it be the SMPS causing all the problems ? or with the standby jumper in if the tubes are firing up does that rule the SMPS out ? if you think it might be that then lets ship one and hope it cures the problems !! Let me know how to make payment
Thanks again !
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bazac
Joined: 19 Mar 2011
Posts: 14
Location: London
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| Posted: Thu Mar 24, 2011 7:42 pm Post subject: |
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Just a thought ! with the standby jumper in does it default to a certain video input ? currently got video composite and component playing in although remote doesnt appear to work !
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bazac
Joined: 19 Mar 2011
Posts: 14
Location: London
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| Posted: Sat Mar 26, 2011 8:29 pm Post subject: |
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Hi Curt need that PS !
Cheers
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