I may need board work done- recommendations?

Pinball Discussion, Location Games, Etc.
Ran
Posts: 169
Joined: Thu Jun 20, 2013 9:59 pm
Location: The Garden State
Contact:

I may need board work done- recommendations?

Post by Ran »

Hey guys
So the other night I flipped on Sorcerer and the CPU was frozen and the LED on the board read error 7.
Game was playing perfectly the night before.
Quick stats: NOS CPU only 2.5 years old. Pinscore Power Board. Rottendog displays. K's Arcade game ROMS.

Been doing tons of diagnosing and DMM testing and its still locked up.
-re-seated all removable chips on the CPU
-re-seated all Molex connections around the CPU
-tested all +5V and +12V molex connections and all +5V legs on the chips. All getting strong power.

Going to pull the board tonight and inspect the backside. I've also been told the crystal at U21 can go bad but don't know how to check that.

I'm nearing the end of my capabilities with regards to board diagnostics (need to take a class on electronics - I'm more of a mechanical guy) and wondering if anyone local is a board wiz or if you recommend someone to send it to for a professional inspection/repair and what that may cost (money is tight with baby #2 coming in a couple months).

Thanks in advance for your thoughts!
-Ran
Current Collection
Hobbit LE | Spider-Man | Mousin’ Around | Counterforce
tullster
Posts: 451
Joined: Wed Jun 26, 2013 12:55 pm
Contact:

Re: I may need board work done- recommendations?

Post by tullster »

Are the batteries and/or battery holder ok? Not sure what error 7 is, but can look it up.

I'll look at it if you like and should be able to figure it out. If it's over my head, at least we should be able to get an idea of where the issue is and worse case send it off to Rob Anthony or someone.

Let me know I'm at tullysgarage at gmail.com

Steve
Ran
Posts: 169
Joined: Thu Jun 20, 2013 9:59 pm
Location: The Garden State
Contact:

Re: I may need board work done- recommendations?

Post by Ran »

Thanks Tully!
I'm going to spend tonight doing one last round of troubleshooting and if I can't figure it out I'll definitely reach out to you since we're practically neighbors down here in Madison.

Just tested the remote battery holder again and the batteries and all are good.
Also tested where its soldered into the MPU and that's good too.
Borrowed Mike's fancy DMM this evening and going to pull the board and check all the pins on the backside.
Also have a few more recs from pinsiders so gonna follow through with their suggestions.

Fingers crossed I can figure out what happened since it was totally fine on Sunday.

Oh and error 7 on the system 9 games is board lockup.
Current Collection
Hobbit LE | Spider-Man | Mousin’ Around | Counterforce
User avatar
ralphwiggum
Posts: 1936
Joined: Mon Jun 17, 2013 3:46 pm
Location: Helenville, WI
Contact:

Re: I may need board work done- recommendations?

Post by ralphwiggum »

I saw your post on RGP (responded there too)... I don't have any System 7s to verify function, but we can certainly socket a new U20 in pretty quick...I may even have the right IC too...just let me know what it is...
Current Collection
Demolition Man, Genie, Pennant Fever, Sinbad, NBA Fastbreak, Williams Phoenix
Ran
Posts: 169
Joined: Thu Jun 20, 2013 9:59 pm
Location: The Garden State
Contact:

Re: I may need board work done- recommendations?

Post by Ran »

Thanks Tim!

Tully came by yesterday to help do a few more diagnostic things and he too thinks its probably the IC socket.
It's not one of the scanbes everyone says are crap so I guess I just got unlucky.

I spoke with Rob Anthony and he said I can send it to him but if you're comfortable removing the old one and putting a new socket I'm I'd love to watch/learn how you do it.

Are you in Madison or outside town?
I can order the part and once it's in stop by your place at your convenience.

-Ran
Current Collection
Hobbit LE | Spider-Man | Mousin’ Around | Counterforce
User avatar
ralphwiggum
Posts: 1936
Joined: Mon Jun 17, 2013 3:46 pm
Location: Helenville, WI
Contact:

Re: I may need board work done- recommendations?

Post by ralphwiggum »

OOPS... I was thinking Sorcerer was a System 7 for some reason.... It is a System 9.... I can definitely help you out. I just brought back an acid damaged System 8 from the dead (5 bad caps and three traces eaten away by Acid Damage) and a System 11 CPU that someone had flipped the coin door harness on and it blue out three ICs, and I had to replace 4 other ICs.... I socket all of them.... System 8,9,11 are all the same for the most part. I work on all of these on the bench with a power supply, DMM and logic probe, and use Leon's test rom to verify PIAs....

I am near Johnson Creek, about 40 minutes from my door to East Town Mall....

Do you have a chip number for U21? I can check my parts stash...
Current Collection
Demolition Man, Genie, Pennant Fever, Sinbad, NBA Fastbreak, Williams Phoenix
Ran
Posts: 169
Joined: Thu Jun 20, 2013 9:59 pm
Location: The Garden State
Contact:

Re: I may need board work done- recommendations?

Post by Ran »

You're a lifesaver!
I believe this is the socket for U-20:

24 Pin
1-3/16" x 11/16" x 5/16"
WIDE socket for ROM/PROM chips 2716, 2732, 2532, 9316, 9332, and 6810 RAM, more.
SOC24PINMW


Found it here:
http://www.actionpinball.com/elect.htm#sockets

I'm happy to order some.

It sounds like you're about a 50 minute drive from where i am in Madison.
Not sure how hectic your schedule is. I've got a 2 year old and pregnant wife but if I give her ample notice and plan ahead I can usually get some time away.
Current Collection
Hobbit LE | Spider-Man | Mousin’ Around | Counterforce
jonogo
Posts: 77
Joined: Thu Jun 20, 2013 3:56 pm
Location: St Louis Park, MN
Contact:

Re: I may need board work done- recommendations?

Post by jonogo »

ralphwiggum wrote:I just brought back an acid damaged System 8 from the dead (5 bad caps and three traces eaten away by Acid Damage)
Was that the pennant fevah?
Collection contains...
Pins: nada
arcades: nada
User avatar
ralphwiggum
Posts: 1936
Joined: Mon Jun 17, 2013 3:46 pm
Location: Helenville, WI
Contact:

Re: I may need board work done- recommendations?

Post by ralphwiggum »

Ran wrote:You're a lifesaver!
I believe this is the socket for U-20:

24 Pin
1-3/16" x 11/16" x 5/16"
WIDE socket for ROM/PROM chips 2716, 2732, 2532, 9316, 9332, and 6810 RAM, more.
SOC24PINMW


Found it here:
http://www.actionpinball.com/elect.htm#sockets

I'm happy to order some.

It sounds like you're about a 50 minute drive from where i am in Madison.
Not sure how hectic your schedule is. I've got a 2 year old and pregnant wife but if I give her ample notice and plan ahead I can usually get some time away.

I am not worried about the socket, I use SIP Strips (I have a billion SIP strips too, so no need for sockets at all)..... I was wondering what the actual chip was that is at U20...I may have one... I figured if you are bringing it over to be socketed, might as well hook it up to my test bench and actually see if we can get it to work :)

As far as my schedule goes, I have weekend days open, I have a 5 year old and a 2 year old (not a pregnant wife though, at least she better not be, LOL), and we just hang out during the weekend while my wife works. You are more than welcome to bring your 2 year old along.

I do have weeknights open after 8:30 pm, but weekends usually work better....
Attachments
sip.png
sip.png (27.19 KiB) Viewed 19027 times
Current Collection
Demolition Man, Genie, Pennant Fever, Sinbad, NBA Fastbreak, Williams Phoenix
User avatar
ralphwiggum
Posts: 1936
Joined: Mon Jun 17, 2013 3:46 pm
Location: Helenville, WI
Contact:

Re: I may need board work done- recommendations?

Post by ralphwiggum »

jonogo wrote:
ralphwiggum wrote:I just brought back an acid damaged System 8 from the dead (5 bad caps and three traces eaten away by Acid Damage)
Was that the pennant fevah?

You know it.... All the caps on the CPU were shot, there were multiple acid eaten traces, and I got rid of your buddies sweet electrical cap wiring and replaced it with that extra harness you sent along and some heat shrink tubing for the rest that the harness didn't cover. I threw some LEDs in the backbox to keep it cool... Runs like a champ now!
Attachments
pf.png
Current Collection
Demolition Man, Genie, Pennant Fever, Sinbad, NBA Fastbreak, Williams Phoenix
Ran
Posts: 169
Joined: Thu Jun 20, 2013 9:59 pm
Location: The Garden State
Contact:

Re: I may need board work done- recommendations?

Post by Ran »

So the U-20 in Sorcerer is ROM 8Kx8 type 2764.
Part number A-5343-10764.

The ROMS in my sorcerer were new from K's Arcade.
I attached a pic from my manual just in case.

-Ran
Attachments
Sorcerer ROMs.JPG
Current Collection
Hobbit LE | Spider-Man | Mousin’ Around | Counterforce
User avatar
ralphwiggum
Posts: 1936
Joined: Mon Jun 17, 2013 3:46 pm
Location: Helenville, WI
Contact:

Re: I may need board work done- recommendations?

Post by ralphwiggum »

Ran wrote:So the U-20 in Sorcerer is ROM 8Kx8 type 2764.
Part number A-5343-10764.

The ROMS in my sorcerer were new from K's Arcade.
I attached a pic from my manual just in case.

-Ran
I have 2764s... I can burn you a new one. I will pull the old ones out first though and put them in my programmer to verify them first...
Current Collection
Demolition Man, Genie, Pennant Fever, Sinbad, NBA Fastbreak, Williams Phoenix
Ran
Posts: 169
Joined: Thu Jun 20, 2013 9:59 pm
Location: The Garden State
Contact:

Re: I may need board work done- recommendations?

Post by Ran »

You're awesome.
I would love to see how all this works.
I've only recently had some board issues popping up and love learning all the little nuances of the electrical side of this hobby.
But i have to admit, I enjoy working on the mechanical stuff a lot more.
Definitely more my comfort zone.

Gonna see if i can steal some time this weekend to come visit you.
Chatting with the wife tonight to nail down a time to make sure it works within you (and your kids) schedule.

Thanks again for offering all this help!!!

-Ran
Current Collection
Hobbit LE | Spider-Man | Mousin’ Around | Counterforce
Ken
Posts: 1092
Joined: Thu Jun 20, 2013 3:55 pm
Location: Johnson Creek, WI
Contact:

Re: I may need board work done- recommendations?

Post by Ken »

Let me know if you guys get together. Would love to pop over and learn too!
jonogo
Posts: 77
Joined: Thu Jun 20, 2013 3:56 pm
Location: St Louis Park, MN
Contact:

Re: I may need board work done- recommendations?

Post by jonogo »

ralphwiggum wrote:
jonogo wrote:
ralphwiggum wrote:I just brought back an acid damaged System 8 from the dead (5 bad caps and three traces eaten away by Acid Damage)
Was that the pennant fevah?

You know it.... All the caps on the CPU were shot, there were multiple acid eaten traces, and I got rid of your buddies sweet electrical cap wiring and replaced it with that extra harness you sent along and some heat shrink tubing for the rest that the harness didn't cover. I threw some LEDs in the backbox to keep it cool... Runs like a champ now!
AWESOME to hear! The wiring awesomeness was the original op/owner.. My buddy only did the PS repair. That was a rats nest of wire caps in the head there. Very happy to hear you got it up and running!
Collection contains...
Pins: nada
arcades: nada
Post Reply