UMK3 EPROM issues

Two different harnesses, both checking out with a multimeter come up with a blank screen. joeybagadonuts is sending me a known working copy of U63 and U54 so we can rule those out.

Unfortunately I don't have an adapter for my reader to check U45/47. If it's still blank with the known working version chips, I'll start looking into replacing the other ones I guess.

Cool. .
 
PM me your address and I will send you a known working 54 and 63, no charge. If they don't work I would assume it's u45 or u47. Let's get this board going.

I got my chips in the mail today. Thank you so much joeybagadonuts, but unfortunately nothing came up on the screen still.

When I hooked it up this time, I've added a speaker recently to my testing rig and I do get the loud "ding" noise. The lights are the same unfortunately. DS1 and the DS3 light furthest from the edge are both solid.

So do I buy an adapter so I can read my other chips or do I try to find replacement ones?
 
Ok, does anyone know anything about the U64 chip? I'm not seeing it in any of the mame romsets. My board doesn't have anything there, but when I search for images of the board every one of them has something there.
 
U64 is the security chip. It is located next to u54 and u63. Your board will definitely not work without that. Post a picture of the board and we might be able to help you out.
 
U64 is the security chip. It is located next to u54 and u63. Your board will definitely not work without that. Post a picture of the board and we might be able to help you out.
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U64 is the security chip. It is located next to u54 and u63. Your board will definitely not work without that. Post a picture of the board and we might be able to help you out.
So... How in the hell was it working before? Lol I swear I didn't pull that chip. *shrug*
 
It's not as easy to program security chips. I believe Toplessz, ctozzi, and steph have the capability to do so. Reach out to one of them for the chip.
 
on the contrary it will run without a security chip. it will reset itself after about a minute.

I have a Hangtime board that registered U64 as bad. said like PICC CHIP BAD or something. the game ran fine... then I cycled it and the error went away.
 
I'm going based on hearsay. I've never actually done it myself either lol. that I can remember.
 
I'm going based on hearsay. I've never actually done it myself either lol. that I can remember.
I have purchased one and will let everyone know if it solves my problem
 
Sorry Zeno. Didn't know you were on the list. I mean I should have known lol.

I'm trying to get this done cause I'm tired of the board just sitting there so the first person that replied I took them up. Let's hope this fixes this stupid problem.
 
Sorry Zeno. Didn't know you were on the list. I mean I should have known lol.

I'm trying to get this done cause I'm tired of the board just sitting there so the first person that replied I took them up. Let's hope this fixes this stupid problem.

I'm fairly confident it will.
 
Well I tested booting the board with no security chip and I had the same symptoms as the OP. I get the initial bong but just a blank black screen. Im sure the security chip will do the trick. Who did you end up buying from, if you don't mind me asking?

Edit: I should have recommended Zeno from the get go. I should have know he had numerous spares. I was only thinking of the capabilities to burn one (which he probably does that too).
 
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Well I tested booting the board with no security chip and I had the same symptoms as the OP. I get the initial bong but just a blank black screen. Im sure the security chip will do the trick. Who did you end up buying from, if you don't mind me asking?

Edit: I should have recommended Zeno from the get go. I should have know he had numerous spares. I was only thinking of the capabilities to burn one (which he probably does that too).

no shit. good stuff.

ToplessZ used to do them, he's out of the game completely now though.
 
no shit. good stuff.

ToplessZ used to do them, he's out of the game completely now though.
I got it from ToplessZ. I'm not sure the details but it sounded like they just exist in a finite number, not made like other eproms.
 
Thank you all for the help. I'm glad I've played so many years of Photo Hunt on Megatouch to realize something doesn't match lol. I AM getting a bad rom on U113 now, but I'll fix that later. Boots up and I couldn't be happier. Thanks again everyone.
 
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