My Vector has recently occasionally locking up/display goes dead and flash on mpu goes steady green.
I've searched Pinside and other forums for my problem but can't find similiar issue.

It can plays for 1 minute to 1 hour and then blanks the displays, coils and flippers still working, GI lights and flash lights goes steady on.
The same thing if in attract mode. It can stand in attract mode an hour than suddenly displays are dark.
When you turn game off and restart it plays again.

Things I done;
- crimped new connectors on J1 and J4 on mpu-board
- crimped new connectors on J3 on SDB-board
- reheated pins on above boards for cracks on pins
- checked above connectors and pins for continuity
- changed and socked U14 on MPU and changed PIA
- run an alltek mpu board for three weeks without any issues so pretty certain that problem is on mpu
- checked the 5volt which is stabil 5,2v in normal and when issue is present
- Visual checked the board and it looks fine, no corotion/battery acid

Pictures of circuit boards attached.

Looking for feedback if anybody hade the same problem, or can hint in direction for solution, before resolving this with buying a new board!

Thanks in advance

IMG_0913 (resized).jpgIMG_0914 (resized).jpgIMG_0915 (resized).jpgIMG_0916 (resized).jpgIMG_0917 (resized).jpg

Thanks for replay. As you noticed at R11 and R2 there are burnmarks so I measured the resistors and they have the wright ohm-value. Therefore I socket the U14 and replaced with new IC if the exciting hade been damaged by the heat. I will replace R11 and R2 and I will inspect the area around battery for leakage!

thanks BigAl for advices!!

Thanks Skidave, I will look in to that board. As you say - I have also not checked that board in trouble searching.

I have now inspected the board and can see cracks on J1 pin 15 that goes to ground. I have put new solder on all pins and reassembled the board. It has been sitting for an hour power on and has not yet locked itself. Fingers crossed.
I was focused that the problem was on the mpu board as the ultimate alltek worked for 3 weeks without locking itself, maybe that board is more stable? I will mark the thread as solved if everything works for a couple of days. Thank you so much for all the help.