I purchased a Last action Hero machine this weekend. Was told it was shopped. It has new rotten dog boards ect. After 10 minutes of play the display went out. I found that the F7 fusion was blown. When replaced the fuse immediately blew when the machine was turned on. I believe I narrowed the cause down to the power supply being bad or the DMD itself. My reading on the power supply board test points are +5 = 5 +12= 12 -12VU=-14 -110V =73 -100 = 0 +68v =73

Does this mean the power supply is bad?
Another note when the DMD was completely disconnected it did not blow the fuse.

Thanks for the help!

Edit.

I took out the rotten dog board that came with the machine. As you can see in the pictures it has burned. I installed a new xpin board and new DMD. When I turned the machine on the DMD lit up for 10 seconds then Stopped. I tested all the fuses in the new xpin board and F3 blew.

Edit 2. I just took out the new xpin power board. It does not appear to have any damage to it.

Edit 3. Rotten dog power supply damaged the new DMD. This caused the new power supply to blow its fuse when plugged in. I was originally told by the seller that it couldn't be the power supply and must be the DMD. This is why I brought the readings here. I have learned a lot over the past few weeks and had little knowledge on this stuff before. I was relying on the seller help on trying to fix this issue. He clearly knew what was going on but didn't want to admit how bad the issue was. The blame was immediately put on me stating it was from the move. First he stated the cause was from a pinched wire. Then after none was found he suggested that it was the DMD so I purchased a new one and plugged it in :/. He had the same readings as posted here I purchased this machine being told that it would not have major problems due to the knew board ect. I only got to play it for 10 minutes. I appreciate all of your guys help. I would also like the make a huge shoutout to Brett from Xpin. He has been great! I will post another update once everything is plugged back in.

Edit 4. Brett fixed the DMD and tested it with the new power supply both worked. I installed last night and everything appeared operational. I was not able to fully play it last night. (kids were asleep and the shaker motor makes that machine loud). I will put some hours on it tonight and check in again.

Edit 5 Played for 30 mins not problems!

Thanks for the reply!

Here is the power supply and the burn it left on the back of the machine.

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Is there anyway to make sure the DMD is good and possibly not compromise the new Power Supply Board

So the new power supply and new led dmd worked for 10 seconds before it did the same thing. What now?

No pinches during the move. I may be using the wrong terminology. The rotten dog power board failed. I pulled It off and it was burned. I purchased a new xpin LED display and Xpin board. When I installed the new board and new DMD it work for 10 seconds the F 7 fuse blew again. I think I am using the term power supply incorrectly. WhenI say that I am referring to the rotten dog board.

Yes 100% plugged in correctly. If you want me to take some pictures I can.

What all should I take a picture of?

Sorry it’s F3 on the new board. The green board is the rotten dog board that came with the machine on it the dmd is F7

Top row -14. 5. 13. Middle row is 18. Bottom three have no reading.

C1 is normal , what is lit?

Yes everything works fine but the DmD when plugged in

Good eye I will get better pictures of it

Does this help

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I purchased HV DMD

Yeah after some testing the new power board is having problems. -112 when testing resistance is 0. Going to have to send it to get fixed. The new dmd was plugged into the old rotten dog board. It’s possible the rotten dog board messed up the new dmd and when it got plugged into the new power board it might have messed it up.

Xpin has been very helpful. It’s for sure not an out of the box failure. It worked for about 10 seconds and is behaving like exactly like rotten dog. Blows the fuse only when dmd is plugged in. The rottendog had apparent damage.

Do you have a link to any references on how to do that?

Update. It appears the Rottendog overloaded the new DMD with to much voltage and damaged a chip. This in turn caused the new power supply to blow its fuse when connected. Should get the DMD and power supply back soon. I would highly recommend XPIN. Brett has been amazing. I will update later this week once everything is plugged back in.

DMD was damaged by the power supply

He said that he may in regards to the rottendog board. From what I understand whatever was supposed to regulate the
High Voltage on the rottendog board bailed and overloaded the DMDs with more voltage than they could handle.

He is a great dude. He went above and beyond. I see you are form Kansas too. Be careful who you get your machine from around here lol