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Post by jaredjaric on Mar 7, 2016 3:01:28 GMT -5
HI Guys,
I have the Cinemax with me that i suspect has a bad focus board.( The video went soft and there is a horizontal band on the image that seems out of focus ).
Adjusting the focus from the menu is possible but it is maxed out already, for it to get a decent focus.
I have been using this unit with a fresh 808 quadrupler from the Crt P.
With the 808 quad, the PJ Probably have logged 30 hours already or more.
Is it possible the 808 quad can ruin a 909 focus board?
The Quads' focus leads have been terminated already and the eht is a 909.
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Post by Casethecorvetteman on Mar 7, 2016 5:41:16 GMT -5
Its not the focus board, its a HV issue.
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Post by jaredjaric on Mar 7, 2016 9:04:51 GMT -5
Its not the focus board, its a HV issue. HI Case,
Always great to hear from you,
I have had HV issues before with two of my units. But have already replaced the quads and either splitter or eht on both units.
Anyway, I have swapped the focus board and this did solve the problem. I have maxed out the contrast earlier to rule out a failing quad. The high contrast usually causes the pj to shut down if the quad or other HV has issues.
Right now I am wondering if the 808 quad is causing the focus board to fail. Have been using cinemax for 8 years straight now , and never had a bad focus board. Always the smps and the quads.
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Post by Casethecorvetteman on Mar 7, 2016 9:40:51 GMT -5
Yeah it wont affect the focus board, if that failed it is just a coincidence. Ive seen HV issues cause bad focus just recently.
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Post by dummyload on Mar 7, 2016 10:38:58 GMT -5
As Case said , the hv section and focus board are totally different circuits no relation to each other .
If in doubt run projector without focus board and see what it does to the image and if image stays stable.
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Post by Casethecorvetteman on Mar 7, 2016 10:49:51 GMT -5
And just be careful putting in the longer focus board where the smaller one come from, the later chassis has a cut out area for the larger capacitor fitted to the longer board, but the earlier models dont, and the capacitor will be damaged by the chassis.
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Post by dummyload on Mar 7, 2016 11:00:12 GMT -5
Well that explains why that big capacitor was crushed in my cinemax,I could not explain it everything seemed to be original from
barco ,So somebody replaced board versions without adapting the case.
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Post by Casethecorvetteman on Mar 7, 2016 11:09:46 GMT -5
Yep, thatll be it mate  It happened to me too, swapped out the whole tray and didnt think that cap was damaged when i first put it in!! |
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Post by Casethecorvetteman on Mar 7, 2016 11:12:01 GMT -5
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Post by jaredjaric on Mar 7, 2016 12:14:00 GMT -5
Yeah it wont affect the focus board, if that failed it is just a coincidence. Ive seen HV issues cause bad focus just recently. Thanks guys. |
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Post by Casethecorvetteman on Mar 7, 2016 12:20:10 GMT -5
No worries mate |
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