I'm no expert on boards. Just wanted to chime in. I don't know anybody that has been able to fix the large Sega displays.

My MSF dmd puked last year. I went the route of the DMD extender. Much cheaper and the color dmd is awesome!

I recommend the Dr Pinball setup kit, it's a little tricky but is a good product in the end...

Looks like something in the supply blew in a very bad way. If the glass is good, electronics should be repairable but don't know how hard it is to get to the backside of the board (ie, do you have to remove the display from the board?). Also, is there a schematic of the display driver circuitry?

Board is burnt through the top layer. I don't think anyone would repair it and still warrantee it.

What brand is it?

My Baywatch dmd crapped out like that one. Local pin repair guru would not touch it. Like Maniac40 said, getting a warranty is almost impossible. So finding someone to fix and having to pay $200 while getting no warranty is too risky of rolling dice for most people

I'm pretty suspicious. Did he do any work on the game before it happened and was the power on?

I doubt you'll find anyone willing to touch the DMD.

So it seems the DMD extender will be a good choice here. I hope it is still available.

I also worry that something may have been damaged on the power supply. Can he get us a picture of it?

Can he still play a game?

Wow, I've never seen one fail like this before. Usually the panel will just die with no visual indication on the board. It appears you have at least two component failures, a capacitor and something else on the far right in that photo that looks burned to a crisp. Maybe a resistor? The electrolyte leaking from the capacitor looks to have done damage to the board. Vishay does repair these, but only certain contacts will allow you to do this. And that's if it's a Vishay, which I doubt. His only option at the moment is a DMD Extender. Have him look at this thread, it steps you through every detail. If he's not into a DIY solution then he needs to sell the game. This is literally the only option until the simpler PinballSP LED display kit becomes available.

https://pinside.com/pinball/forum/topic/diy-addams-family-poor-mans-color-dmd

Repairing these yourself is impossible because the glass will have to be removed, which is hundreds of tiny little connections. And I can't imagine it's cost effective either to have Vishay do it (again, it doesn't look like a Vishay) compared to a $250 DMD Extender solution.

It is. David can now be reached easily, you will be put on a short waiting list for about a month.

That won't be an option, these have been out of production for a long time and nobody has one, even for $500+. At that price it's nearly half the value of the machine.

I doubt this, the display generates its own high voltage (+60v/+100v) from a low voltage +18v source coming from the game's power supply.

Doesn't Mike D's smart DMD work with large Segas now? I think I heard someone saying that recently?

maybe he can buy the parts and you can help with putting the DMD extender together for him, will be less then half the cost of that new sega dmd and have more options,

i was slightly intimidated when i originally saw the extender but came back to it again after about a year and dove in head first, have all the parts now just neew to get it hooked up

I've seen cases where these are listed as available but if you call them or add it to your cart they are not. Having a blown DMD is a big turn off to buyers. I can't exactly say what impact it will have value wise but the loss will probably exceed the value of the DMD.

Even if PBL has them for some reason they are not taking orders until the end of the month. He can order an Extender and have all the other parts in hand by the time the Extender board ships/arrives.

SmartDMD is an option too but the software is very buggy. It's been a big problem for me.

You can test it on any of the games you have. Just be sure to change the display setting to Sega large 192x64 using the configuration utility on the SD card before disassembling the kit and sending it to him. You just won't be able to physically do a test fit because it's a larger 17.3" screen.

DMD extender for sure is the smartest and most economical route at the moment. I did one in a Frankenstein. Hardest part was cutting the wood panel and that only took 10 minutes.

image_(resized).jpeg

image_(resized).jpeg

Check out my thread, I list all the parts and assembly details.

I blew the regulator on mine, you can not get to the solder side, so I surface mounted a new one soldering wires to what I could....been working good for a few years now. Keep an eye out for a WMS "Dotmation" slot machine, they use the same DMD. I actually just passed on one for $100 recently (It was an "X Factor", I have that slot and that game burns in bad on the Dmd... Anyway, those slots usually go cheap when the PS craps out ( easy fix), but good score for the Dmd.

I've been looking everywhere for a WMS Dotmation slot and can't find one.

Isn't ColorDMD coming out with a large LED display? I guess I'm not positive on that but I thought I read that somewhere.

LED display coming out will be 128x32, not the large DMD size.

PinballSP has a large display kit in the works.

what is PInballSP?

https://pinside.com/pinball/forum/topic/dmd-led7-by-pinballsp

https://pinside.com/pinball/forum/topic/stolen-pin2dmd-color-rgb-controller-from-pinballspcom/

Schematic is in the Maverick manual page 88.
http://mirror2.ipdb.org/files/1561/Data_East_1994_Maverick_Full_Manual.pdf

DE and Sega were very good about including the display schematics of all brands the games originally shipped with.

I agree with Crash as I look over the display board more and more. The electrolyte out of one or more of the capacitors leaked out (which is conductive) and crossed 2 voltages or one voltage and ground. Likely what you see will be a resistance between the voltages/ground internally of the PCB so there will be nothing you can do to repair the board.

I'm sure you could cut traces and run the wire and components off the board to isolate the board. I had to do that with three small Capcom DMD power boards already.

Harvs, what is the resistance measurement of P1 where the red/black plug into?P1_(resized).png

Can be possible. Need to see exactly what voltage(s) shorted or voltage to ground that caused the board to burn. From that, the schematics will show us everything that will have to be part of the 'off board' repair. All new Electrolytic caps will be needed, but at least now you can choose to purchase axial caps instead of radial caps to help prevents accidental shorts across the capacitors.

Right, but measure that trace to ground (black wire). If is less than 300 ohms, that voltage is shorted. Just a guess, I would believe this voltage to ground likely should be 2k ohms or higher.

I have a nice display in a box that I cannot test in a machine, due to lack of one, I can measure tonight to see what resistance I have on it. I bought it off Ebay and it looks brand new. I was planning on keeping it for a future project.

I really was hoping to see what the trace from the red wire to ground measured. You'll have to measure it were the trace still exists going to any of the capacitors.

I ended up getting home later from a pinball tournament later than I expected. I'll measure the DMD I have later this evening after I get home from work. Assuming someone does not beat me to it.

I'm pretty much the DMD Extender go-to guy. If you need any help shoot me a PM. I see these large Sega DMD threads about once a month and have become quite familiar with things.

Bump. What did you end up doing?

Finally did it!
No dmc-extender or other monitor-based replacement!

More info here: https://pinside.com/pinball/forum/topic/who-needs-a-sega-192x64-replacement#post-3284425

Greetings,
Dom