Nanao MS8-26SU Cap Map ????

SaminVA

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Well working on my first New Years resolution of getting all my games up and running. Thought I would start by recapping monitors in the games that need it. I am starting with my Virtura cop 2 which I bought 2 years ago. It has a few issues when you first fire it up but once it warms up it's not to bad but still needs a cap kit.
I have it pulled out and the board on the table, never been capped before because it has the white goop all over the place. Just wondering if anyone has a cap map for the board? If not I guess I'll have to go on the cap scavenger hunt.:D
Thanks
 
I worked on one of these once, mine had lost vertical deflection. There's an issue with these Nanao's where almost in the center of the board is a cap that leaks all over a resistor right next to it, if the resistor goes out you lose deflection. You may want to look for that when you cap yours, just to make sure it's not on the brink.
 
theres 2 resistors you should upgrage to larger ones...

here we go.. courtesy of mod

Replace C433 ( 10uf 50v ) and R433 ( 2.2K 1/4w ) , if still no deflection replace R436 ( 15K 1/4w )

the last one i worked on i believe r433 had changed value from 2.2k to like 200k!!!!!! once you see how puny those original resistors are youll wonder why they didnt use larger ones... to make the larger ones fit just bend the leads to the resistor stands straight up and bend the other lead over and down so youve made a upside down "u"

also with the las one i did there was ALOT of burned/cracked solder connections on diodes resistors etc in that general area so look it over well for bad solder!
 
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Thanks for the info, I'll look into making the changes.
I am still trying to sort out the cap map and I have run into a slight problem.:001_ssuprised: I got the cap kit from Bob Roberts and the first problem I ran into was the first cap on the list,C410 which is supposed to be a 1uf@ 50V. Well their is no C410 but their is a C401 and it is a 1uf @ 50V so it looks like it is a typo.:)
The next problem I could not find C430 which is supposed to be a 220uf @50V. I did find a C437 which has a 120uf @ 50V on the board and right next to it is a place for C438 but it has a wire jumper. The 120uf @ 50V seems to be an odd ball cap as it's not listed on Bob's site but I am sure I can order it some where I just hate to have to Waite for it wile I got my monitor tore apart. I wish someone had discovered this error before now.
So I guess the list should be updated to change C410 to C401 and delete C430 and add C437 120uf @ 50V to the list.
I found all the other caps on the original Bob Roberts cap list. I did find a couple other posts on this subject but no one suggested changing the list.:D
PS Here's the other post referring to the problem
http://forums.arcade-museum.com/showthread.php?t=113569&highlight=MS8-26SU

http://forums.arcade-museum.com/showthread.php?t=8360&highlight=MS8-26SU
 
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you have to remember too that with almost all monitors there may be undocumented changes and factory modifications.... should at least be notations on the list i suppose...
 
Well I finally finished installing a cap kit in my Virtua Cop 2 Nanao MS8-26SU monitor. It took me a wile because I wanted to make up a monitor cap map to make it a little easer and faster to install the caps .I also had to order a cap that was not in the cap kit I got from Bob Roberts. Their were 2 problems with the cap kit and I don't know if it's a mistake or if their are different versions of this Nanao monitor but here's what I found different.
First according to the cap list C410 a 1uf @50v cap well I could not find one on my monitor board. I did find C401 which had a 1uf @50v cap on the board so I assume C410 was either changed to C401 or it was a typo by who ever put the original cap list together.
Second, According to the cap list C430 a 220uf @50v was not to be found on my monitor board. I did find a C430 but it was a regular disc cap,not an electrolytic cap. However right next to it was C437 a 120uf @50v cap that was not on the original cap list. That's why I had to order one from Mouser. I checked Bob's site and he didn't have any listed and I could not find one of that value in any of my other cap kits so it must be an oddball value in monitors. Here is the corrected list as it should be for my Nanao MS8-26SU monitor. Let me know if you find the same thing the next time you cap one.
Nanao MS8-26SU Cap List
1uf 50V C401/(C420 located on Vert board)/C501/(C532 located on Vert board)/C563/C579
1uf 100V C452
4.7uf 100V C537
10uf 25V C433
10uf 50V C574
10uf 100V C561
10uf 250V C332 (located on neck board)
22uf 160V C570/C909
33uf 16V C521
33uf 100V C431/C432
47uf 16V C522/C572
47uf 25V C908
47uf 50V C454
100uf 50V C451
100uf 200V C906
220uf 35V C912/C913
220uf 50V C910
470uf 16V C573/C576
470uf 50V C422
120uf 50V C437
Their was one more slight problem with the kit. C431 and C432 are 33uf @100V but the kit had 33uf @ 160V which is fine but are so much larger the don't fit on the board like they should because they are so close together and C451 100uf @ 50V is also close. I had to rock it sideways and bend the leads on the other two to make them fit. You can see it in the picture. Other than that everything else went with out issue.The kit fixed the major problems with the monitor which was a rolling picture till it warmed up and also thin scan lines running across the picture which would go away when it warmed up. The picture was also slightly dark but looks a little brighter now but if I turn the brightness pot up the picture will bleed or streak to the right. I don't see a contrast adjustment and didn't mess with the fly back adjustments. The picture looks good enough for me but if you look real close on the left side of the screen you can see very faint vertical columns or lines but you have to look close to see them. I posted a video of the attract mode and also posted my Cap Map I made that might help someone else recap one of these beasts.
http://www.youtube.com/watch?v=7VWW9J1akco
I made the 3 cap map pages into PDF files but they were to large to post here so I posted them as Jpgs. If anyone needs them maybe I could email them.
 

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One more thing that might be of help. Before installing my Cap Kit both my guns were working 100% and aiming great anywhere on the screen. After installing the Cap Kit both guns had problems. They would only fire in the middle of the screen. I had to go into the gun set up and manually adjust each gun. As a note the default and auto calibration never did work. Now both guns are working 100% again.:D
Here's a few more pictures
 

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NICE!!!


thank you for taking the time to make more documentation about this monitor!!!!!

the more info the rest of us have the better off we all are!!
 
I forgot Sam had this thread, and that I subscribed to it. In addition to Sam's hard work, I will add this information as well.



Cap Map now available for the Nanao MS8-26SU.

Cap locations marked in red, are typically found in the pre-made cap kits, cap locations in orange are typically not included in pre-made cap kits.


CapMapMS8_26SUFinal_zpsa9f9cddd.jpg




Cap Listing:
C332 / 10uf 250v / located on neck board
C401 / 1uf 50v
C420 / 1uf 50v / located on IC board IC103
C422 / 470uf 50v
C431 / 33uf 100v
C432 / 33uf 100v
C433 / 10uf 25v / 10uf 100v was installed on the chassis
C437 / 120uf 50v / not included in most cap kits
C451 / 100uf 50v
C452 / 1uf 100v
C454 / 47uf 50v
C501 / 1uf 50v
C521 / 33uf 16v
C522 / 47uf 16v
C532 / 1uf 50v / located on IC board IC103
C537 / 4.7uf 100v
C561 / 10uf 100v
C563 / 1uf 50v
C570 / 22uf 160v
C572 / 47uf 16v
C573 / 470uf 16v
C574 / 10uf 50v
C576 / 470uf 16v
C579 / 1uf 50v
C905 / 680uf 200v / not included in most cap kits
C906 / 100uf 200v
C908 / 47uf 25v
C909 / 22uf 160v
C910 / 220uf 50v
C912 / 220uf 35v
C913 / 220uf 35v
 
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