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DGP
Joined: 05 Nov 2008
Posts: 57
Location: Barcelona
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| Posted: Wed Mar 31, 2010 2:17 pm Post subject: |
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| Nashou66 wrote: | Hi Diego, I used the larger grey TDK Z-CAT ferrite clamps on the astig board right near the connector. I tried some other types but the Z-CAT ones worked the best. Try different types to see what works.
Athanasios |
Hi Athanasios, thanks for your fast replay.
Unfortunately I don’t have an oscilloscope to measure de noise level.
How many ferrite clamps did you use, I mean, did you use one ferrite clamp for each cable or one ferrite clamp per each RGB group of stig cables?
Diego
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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CZ Eddie
Joined: 23 Mar 2006
Posts: 1601
Location: Austin, TX
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| Posted: Wed Jun 09, 2010 2:56 am Post subject: |
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Just posting an inventory of stock component values from a 1996 Marquee 8500, in case it might help anyone else.
Caps only + a couple resistors
-------------------------------------------------------
EDITED 7/5/10 to add model #'s & LVPS/HVPS info
-------------------------------------------------------
STIG BOARD 50-2130-02P
6 EACH 470uF 25v 85C
12 EACH 25v 22uF
-----------------
CONVERGENCE BOARD 50-2230-01P
18 EACH 22uF 50V 85C
12 each 10Uf 250V 85C
------------------
VERTICAL BOARD 02P
7 EACH 470uF 35v 85C
1 EACH 10uF 50V 85C
1 EACH 2.2uF 50V 85C
4 EACH 100uF 50V 105C
------------------
STIGMATOR WAVEFORM (CLM) 50-2010-02P ISS 2
3 EACH 22uF 25V
2 EACH .1K 9445 MMK 100-
------------------
DEFLECTION PROCESSOR (CLM) 50-2106-05P
2 EACH 220uF 25V
------------------
FOCUS BOARD 50-2034-02P
8 EACH 470uF 35V 85C
6 EACH 22uf 50V 85C
1 EACH 10uF 50V 85C
2 EACH 0.42 OHM 5% Warning: Non-standard 5% (E24) value
------------------
HDM 07P
6 EACH 3300uF 6.3V 85C
2 EACH 3300pF J 2KV
2 EACH 1 OHM 5% RESISTORS
1 EACH 220uF 160V 105C
2 EACH 1000uF 16V 105C
1 EACH 10uF 50V
1 EACH 47uF 385V
1 EACH 0.47 OHM 5% RESISTOR
1 EACH 100uF 50V 105C
1 EACH 22Uf 25V
2 EACH 220uF 35V 85C
-----------------
VNB 50-2038-01P
2 EACH 22uF 100V 85C
-----------------
HVPS
6 EACH 560k OHM 5%
2 EACH 220 OHM 5%
2 EACH 270k OHM 5%
3 EACH 1k OHM 10%
1 EACH 470k OHM 5%
2 EACH 1uF 10% 400V
2 EACH 0.47UF 630V
----------------
LVPS
LVPS
6 EACH 4.7uF 50V 105C
4 EACH 10uF 16V
7 EACH 4.7Uf 25V
1 EACH 4.7 50v
1 EACH .22uf 275 +SH
2 EACH 1uF 275 ~SH
9 EACH 1uF 50V
1 EACH 22uF 10V
1 EACH 22uF 250?
2 EACH 2.2uF 50V
7 EACH 100uF 25V
1 EACH 220UF 25V
2 EACH 100uF 50V
1 EACH 1000UF 16V
5 EACH 470UF 35V
1 EACH 4700UF 10V
2 EACH 2200UF 25V
3 EACH 33UF 250V
3 EACH 100UF 100V
2 EACH 75 OHM 0.25%
2 EACH 33k OHM 5%
1 EACH 100k OHM 5%
1 EACH 330 OHM 5%
1 EACH 2.2k OHM 5%
1 EACH 0.1 OHM 2%
1 EACH 0.51 OHM 5%
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Last edited by CZ Eddie on Mon Jul 05, 2010 8:47 pm; edited 3 times in total
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JustGreg
Joined: 07 Mar 2006
Posts: 3098
Location: Kenosha, WI
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| Posted: Wed Jun 09, 2010 4:42 am Post subject: Vertical light lines |
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Nash,
The pix you posted here:
https://www.curtpalme.com/forum_archived/viewtopic.php@t=9608.html
are exactly what I was trying to verbally explain in my post where I described them as a 'fold. Now that I see the pix it isn't folds at all is it.
So this can be fixed. After I get some sleep I'll re-read that part of the thread and go to work on it.
_________________
Greg
"Is it ignorance or apathy? Hey, I don't know and I don't care!" --Jimmy Buffett
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Sparky015
Joined: 12 May 2009
Posts: 1185
Location: Cleveland / Akron, OH
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| Posted: Wed Jun 09, 2010 10:53 am Post subject: |
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Eddie,
You may want to list the board part numbers as well, as these components do vary depending on vintage. For example, on new VNBs, stock caps are 22uF 150V 105Cs
Edited out Eddie's quote per later posts.
_________________
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Last edited by Sparky015 on Tue Jul 06, 2010 12:56 pm; edited 1 time in total
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Wed Jun 09, 2010 12:41 pm Post subject: |
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Guy's First off all lytic caps should be 105c to begin with. This will give better reliability. The VNB's should go up to the 160v ratings.
The values on many boards should be kept the same but you can experiment with larger values (uf) , usually just a single jump in value. like 22uf to 33uf. I think the CVA 10uf 250v caps would benefit here from that. They are on a 24 volt rail so i do not think the 250 voltage is needed. 50v is fine. For those caps Id try the Panny FM 220uf 50v-63v. Chris Stevens who was one of the first modifiers of the Marquee and was with Accurate Imaging who's marquee clones got great reviews used 22uf 50v caps there. I think even higher like the 220uf would even be better especially in installations where you need more keystone or geometry use.
I think there is no one definite set of values or value you can use. Each marquee is slightly different due to the variance in value of its existing components. so what works for me might not work for you or the next marquee. Changing every lytic cap in a marquee will now give you a base starting point where you know all parts are new. Plus its all about the fun in this hobby. Some may disagree about it being fun, I let them say what they will 
Enjoy the upgrades and this hobby, for me its therapeutic , some like gardening and ripping out weeds I like tinkering with electronics. I see nothing wrong with that
Pooge away guys
Athanasios
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"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Wed Jun 09, 2010 12:59 pm Post subject: Re: Vertical light lines |
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| JustGreg wrote: | Nash,
The pix you posted here:
https://www.curtpalme.com/forum_archived/viewtopic.php@t=9608.html
are exactly what I was trying to verbally explain in my post where I described them as a 'fold. Now that I see the pix it isn't folds at all is it.
So this can be fixed. After I get some sleep I'll re-read that part of the thread and go to work on it. |
If your talking about the brighter vertical bars That is caused by the Contrast Modulation Board. I worked for months trying to fix that board. I added Oscon caps all over the place on it. Mine is the new style board and your problem might not be related. So if you have the CMM module remove it and see if it goes away. if you don't need it leave it out.
Athanasios
_________________
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Wed Jun 09, 2010 7:09 pm Post subject: |
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| Nashou66 wrote: | The values on many boards should be kept the same but you can experiment with larger values (uf) , usually just a single jump in value. like 22uf to 33uf. I think the CVA 10uf 250v caps would benefit here from that. They are on a 24 volt rail so i do not think the 250 voltage is needed. 50v is fine. For those caps Id try the Panny FM 220uf 50v-63v. Chris Stevens who was one of the first modifiers of the Marquee and was with Accurate Imaging who's marquee clones got great reviews used 22uf 50v caps there. I think even higher like the 220uf would even be better especially in installations where you need more keystone or geometry use.
Athanasios |
Nash correct me if i'm but this sounds like a very flawed idea. It doesn't matter what rail those larger CVA caps are on, aren't they being driven by the trio of smaller 22uf50 volt caps and then in turn drive the coil? Why put a teeny little 50 volt cap there?
Last edited by draganm on Wed Jun 09, 2010 10:26 pm; edited 1 time in total
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Wed Jun 09, 2010 7:44 pm Post subject: |
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| draganm wrote: | | Nashou66 wrote: | The values on many boards should be kept the same but you can experiment with larger values (uf) , usually just a single jump in value. like 22uf to 33uf. I think the CVA 10uf 250v caps would benefit here from that. They are on a 24 volt rail so i do not think the 250 voltage is needed. 50v is fine. For those caps Id try the Panny FM 220uf 50v-63v. Chris Stevens who was one of the first modifiers of the Marquee and was with Accurate Imaging who's marquee clones got great reviews used 22uf 50v caps there. I think even higher like the 220uf would even be better especially in installations where you need more keystone or geometry use.
Athanasios |
Nash correct me if i'm but this sounds like a very flawed idea. It doesn't matter what rail those larger CVA caps are on, they are being driven by the trio of smaller 22uf50 volt caps and then in turn drive the coil. Why would you put a teeny little 50 volt cap here? |
I doubted it also. But this is what he did on all the Pj's they sold. Also I scoped the voltage from those caps. It never gets that high. Mike parker also went with 390uf by 63 volts IIRC, I can't check that to confirm as i do not have access to his site any longer.
If you look at the schematic the 10uf caps are the buffer caps for the 24 volt rail in parallel with 100nf 50v caps. They are not driven but feed the amps. They really do not get any high peak surges from what I have seen scoping it while ramping the convergence all over the place. I am not sure why they went with 250, maybe back then that voltage had a higher ripple current value. Most caps ripple current increases as you go up in voltage but size and other factors may come into play now with the newer design caps.
Like I was told by someone here before "you'll never know till you try".
Athanasios
_________________
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tse
Joined: 03 May 2006
Posts: 1014
Location: Sweatbucket, Fl.
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| Posted: Fri Jun 11, 2010 12:03 am Post subject: |
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There is no reason to have caps across a rail that are rated much more than the voltage of the rail. Maybe Ehome had thousands of the 250V caps left over from some other project and used them so they didn't have to buy 35V caps. Business is business.
Scott
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JustGreg
Joined: 07 Mar 2006
Posts: 3098
Location: Kenosha, WI
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| Posted: Fri Jun 11, 2010 1:45 am Post subject: Re: Vertical light lines |
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| Nashou66 wrote: |
If your talking about the brighter vertical bars That is caused by the Contrast Modulation Board. I worked for months trying to fix that board. I added Oscon caps all over the place on it. Mine is the new style board and your problem might not be related. So if you have the CMM module remove it and see if it goes away. if you don't need it leave it out.
Athanasios |
Yeah the CMB has been out since day one. Still have the problem. Well, I WOULD have the problem if the &$#&^@#^! thing would give me HV!!! But that's another story. I'll revisit the bright vertical lines once I figure out what went wrong during retubing. 
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Greg
"Is it ignorance or apathy? Hey, I don't know and I don't care!" --Jimmy Buffett
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Fri Jun 11, 2010 2:14 am Post subject: |
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| tse wrote: | There is no reason to have caps across a rail that are rated much more than the voltage of the rail. Maybe Ehome had thousands of the 250V caps left over from some other project and used them so they didn't have to buy 35V caps. Business is business.
Scott |
yeah thats what I thought too.
Thanks for the clarification Scott.
Athanasios
_________________
Don't blame your underwear for your crooked ass~ unknown Greek philosopher
"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
One Smart Dog!!!
Marquee High Performance Bellows now shipping!!
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CZ Eddie
Joined: 23 Mar 2006
Posts: 1601
Location: Austin, TX
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| Posted: Mon Jul 05, 2010 8:39 pm Post subject: |
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| Sparky015 wrote: |
Eddie,
You may want to list the board part numbers as well, as these components do vary depending on vintage. For example, on new VNBs, stock caps are 22uF 150V 105Cs |
Done.
I also added LVPS & HVPS parts. Forgot to grab the model#'s for those two devices though.
You might consider removing my post from your post's quotes, just so the old info in the quote doesn't confuse anyone.
Direct link to my earlier post:
http://www.curtpalme.com/forum/viewtopic.php?p=253443#253443
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CZ Eddie
Joined: 23 Mar 2006
Posts: 1601
Location: Austin, TX
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| Posted: Tue Jul 06, 2010 12:50 am Post subject: |
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edited because more than one item was missing.
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Last edited by CZ Eddie on Sun Jul 11, 2010 6:26 pm; edited 1 time in total
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JustGreg
Joined: 07 Mar 2006
Posts: 3098
Location: Kenosha, WI
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| Posted: Tue Jul 06, 2010 5:35 am Post subject: |
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Nice kit list Eddie. A definate keeper. For <$100 it doesn't really matter if the list isn't an exact fit for the vintage. I'd find a use for the odd bits eventually. 
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"Is it ignorance or apathy? Hey, I don't know and I don't care!" --Jimmy Buffett
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Mon Jul 12, 2010 3:48 pm Post subject: |
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question about the vdm.
on the vdm there is a ground pin which is unused, does it make sense to connect the ground pin to the ground of the chassis?
anyone ever tried this and measured it with a scope?
dennis
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Mon Jul 12, 2010 3:55 pm Post subject: |
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| dvh99 wrote: | question about the vdm.
on the vdm there is a ground pin which is unused, does it make sense to connect the ground pin to the ground of the chassis?
anyone ever tried this and measured it with a scope?
dennis |
On earlier Marquees they had the ground pin connected and later they didn't for some reason. The main ribbon cabling has ground there as well as does the CVA. I tried it and saw no difference on the scope while looking at the defection waveforms
to the yokes.
Athanasios
_________________
Don't blame your underwear for your crooked ass~ unknown Greek philosopher
"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Mon Jul 12, 2010 3:58 pm Post subject: |
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 no need to bother about that pin anymore.
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Mon Jul 12, 2010 7:12 pm Post subject: |
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the 1.2 resistors are koa resistors, what are koa resistors?
i ordered regular metal film 1.2ohm 1%tolerance, is it safe to use them or do they have to be koa?
i am modding my friends pj right now and i want to be absolutely sure regular metal film resistors do not damage the conv module.
in the parts list it says 1.2ohm 5%tolerance and the koa isnt mentioned.
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