Outrun Deluxe Pcb Repair

[ricky4828]

Hi, so I purchased an outrun deluxe. Cabinet and art work in pretty good condition but nothing working. I started by repairing the monitor. Moving onto the pcb, voltages checked both red LEDs light but only rubbish on screen and looks like no sync. Checked sync with oscilloscope and no signal. Managed to find the 74ls125 buffer for video, sync in but no sync out. Now replaced. I have written and placed the 4 test roms in the cpu board. Still rubbish on screen but with sync now. Even though I have no info on screen, the test is being carried out as I get flashing brake lights and star button lights. The problem is I get 17 brake flashes and only three start flashes. I see that alot of the memory chips are not easy to get hold of. My question is, is it worth trying to repair? Is it possible its not all the memory chips but the memory control or buffer chips. Im just not sure. Maybe its worth me getting another pcb set but again there doesnt seem to be many around and when there is one available and working its alot of money. Any advice appreciated
Thanks Rick

 

[parism]

The video I posted below simulates what you are seeing, take a look and you can easily figure out which ram is bad. Unless you have a lot of corrosion, if most memory comes back with errors it is likely another IC in the chain that "links" a lot of RAM, DATA bus or ADDRESS bus, etc. hence a lot of "linked" ram comes back bad.

OutRun Memory test (memtest) LED pcb

As you know, the built-in OutRun memory test has its flaws (for example does not tell you if the error is on the Data or Address bus) . The alternative memtest rectifies that. That test also has a built-in behavior that will flash the Start light if the RAM is OK or the brake light if it is...

forums.arcade-museum.com

It is worth repairing but you will need specialized equipment and a "gentle" hand as they have small traces. I have repaired dozens of these (I no longer do that, not a lot of free time), but Ken at irepairsega.com should be able to handle this and has repaired hundreds…

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[irepairsega]

Worth repairing depends on what you value game at. I am the only one I know of that has been doing these for last 35+ years. Costs run between $100 and $300 plus shipping depending on how bad its been tortured.

 

[ricky4828]

Worth repairing depends on what you value game at. I am the only one I know of that has been doing these for last 35+ years. Costs run between $100 and $300 plus shipping depending on how bad its been tortured.

After looking for replacement chips and the confusion of equivalents Im coming to the conclusion of sending it to you. I will have lots more to do on the other parts. I will contact you through your site .Many Thanks