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papalek
Joined: 08 Mar 2006
Posts: 1536
Location: Longs SC
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| Posted: Sat Dec 22, 2007 5:12 pm Post subject: |
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When looking at the image it looks like it is just the red because it is the most extreme. When looking at a test pattern it is all three but mostly the red. and a touch of mis alignment in the lower corners. But it is very slight at the bottom corners,probably because of the extreme movement of the top. I will try and take a pic of the grid pattern later. Right now I have pulled the green tube. It has some fungus in it. I might as well take care of it while I am sorting out the convergence problem.
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Sat Dec 22, 2007 5:19 pm Post subject: |
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I would also check you 9, 20 and 25 volt sources to see if any are way out.
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papalek
Joined: 08 Mar 2006
Posts: 1536
Location: Longs SC
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| Posted: Sat Dec 22, 2007 5:32 pm Post subject: |
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I just do not understand why when you change to an unconverged channel and then back, that it will be converged properly for a little while and then screw up again. What does going to the unconverged channel have to do with fixing (temporarily) the converged channel?
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tse
Joined: 03 May 2006
Posts: 1014
Location: Sweatbucket, Fl.
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| Posted: Sat Dec 22, 2007 5:50 pm Post subject: |
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The registration boards break down into two main types. One has all thru hole parts and the other is surface mount. The whole assy is modular with waveform, function summer, PLL, and power supply sections.
I suspect that a 2600 will have the surface mount version. True?
Scott
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tse
Joined: 03 May 2006
Posts: 1014
Location: Sweatbucket, Fl.
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| Posted: Sat Dec 22, 2007 6:03 pm Post subject: |
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| macgyver655 wrote: | | Hey Paul. Initally you said it was the Red. Now I think you said all 3 colors do it but to different extremes. Is this correct? This condition my take the summer board out of the equation, or at least most of it. If all 3 colors are affected it eliminates individual color compononts and if the 3 colors are affected differently it takes the master functions out of equation also. Let me look somemore. Scott, what do you think? |
The functions are divided up in a pretty logical manner so it should be pretty easy to narrow down. The switching from a blank channel to the registered one and it works for a while throws a little curve in the thing, though. There is a DAC for the functions that gets instructions from the CPU through a programmable part on the summer bd. So is the DAC geting it's instructions then loosing it? Or maybe the good instructions get resent corrupted? Maybe makes more sense that the DAC is screwing up?
Scott
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Sat Dec 22, 2007 6:42 pm Post subject: |
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| tse wrote: | | macgyver655 wrote: | | Hey Paul. Initally you said it was the Red. Now I think you said all 3 colors do it but to different extremes. Is this correct? This condition my take the summer board out of the equation, or at least most of it. If all 3 colors are affected it eliminates individual color compononts and if the 3 colors are affected differently it takes the master functions out of equation also. Let me look somemore. Scott, what do you think? |
The functions are divided up in a pretty logical manner so it should be pretty easy to narrow down. The switching from a blank channel to the registered one and it works for a while throws a little curve in the thing, though. There is a DAC for the functions that gets instructions from the CPU through a programmable part on the summer bd. So is the DAC geting it's instructions then loosing it? Or maybe the good instructions get resent corrupted? Maybe makes more sense that the DAC is screwing up?
Scott |
I'm assuming your referring to IC 69 on the summer board, and yes it communicates directly with IC7 (24c02 eeprom) on the CPU board or should I say the eeprom communicates with it. Anyways, might I suggest to try setting up another channel from scratch (without copying from another) and see if it responds the same way?
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papalek
Joined: 08 Mar 2006
Posts: 1536
Location: Longs SC
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| Posted: Sat Dec 22, 2007 8:44 pm Post subject: |
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| macgyver655 wrote: | | Anyways, might I suggest to try setting up another channel from scratch (without copying from another) and see if it responds the same way? |
Yes I have tried that.
About the time you start matching the blue to the red is when it will jump out of wack. Which board is the summer board?
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Sat Dec 22, 2007 11:07 pm Post subject: |
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Well if this has not magically fixed itself, I need some more info.
1st: you said the function keys on the remote stop working when it goes out of alignment. Is this on all 3 colors or not. What specific functions are lost? Try other adjustments to see what all is not working.
2nd: On the CPU board you just got, what is the REV id, also do you remember what the Rev id was on your old board?
3rd: I need the numbers off the stickers on the chips on the CPU board. IC2,IC8 and IC11. All numbers including the checksum (last 4 digits on the stickers). I need these for both CPU boards.
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Sun Dec 23, 2007 12:11 am Post subject: |
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I know I'm just a dumb-ass country boy but, if the 2600 shares the same basic design as it's bigger brothers in the X600 series, wiggle or swap out the interconnect that goes from J46 on the focus board to J50 on the reggie board and try again.
I had the same problem last summer and it drove me nuts for a week. Speaking of summer, it can't be the summer board, it's December 
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Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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papalek
Joined: 08 Mar 2006
Posts: 1536
Location: Longs SC
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| Posted: Sun Dec 23, 2007 1:48 am Post subject: |
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Here is the picture of what it looks like when it is screwed up. All the controlls work when it is like this except the upper red controls. I have no size,height ,linearity,bow,keystone of the upper red in the horizontal plane Vertical key and bow still work.
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papalek
Joined: 08 Mar 2006
Posts: 1536
Location: Longs SC
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| Posted: Sun Dec 23, 2007 1:50 am Post subject: |
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Chip, The 2600 is an ES set. No focus board.
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tse
Joined: 03 May 2006
Posts: 1014
Location: Sweatbucket, Fl.
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| Posted: Sun Dec 23, 2007 6:50 pm Post subject: |
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Attached is pic of function summer bd. The right side board in the registration assy. If your projector is an "X" version there should be a daughter bd attached for the green functions. You can try changing it with a spare and see if anything is different as far as the top pincusion is concerned. You can install without the green daughter bd attached but you will get I2C errors. Turn these off, with projector off, with switch 5 on the CPU card. Check the part number of the IC in the socket for a match between the different bds. Try first without changing it if they are different.
Scott
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papalek
Joined: 08 Mar 2006
Posts: 1536
Location: Longs SC
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| Posted: Sun Dec 23, 2007 7:33 pm Post subject: |
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I tried swapping that board the last time it done this. It did not help. The only one of them that I have now is in the spare 4600 which is behind the last row and behind the Christmas tree. so swapping that will have to wait till after Christmas.
If you do a search for ampro convergence you will find the other thread from a year ago when I first put this up.It had the exact same problem then. I would post a link to it but I am not sure how to do the link.
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papalek
Joined: 08 Mar 2006
Posts: 1536
Location: Longs SC
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| Posted: Mon Dec 24, 2007 4:35 pm Post subject: |
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it is working great now. 
Thanks everyone and especially tse. 
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