Judge Dredd Power reset issue

[handbaked]

Hi All

New to the forum, but hoping one of you may be able to help me.

I have a Judge Dredd pin that keeps resetting. After a varying amount of time on, the machine will do a full reset, like the power has been lost and turned back on again. After some reading I thought it may be the main power board so replaced it with this: https://www.pinballdisplays.co.uk/ProductDetails.asp?ProductCode=WDB089

However, the problem is still present. Does anyone have any advice on where to look next?

Thanks.

 

[paddythegreek]

Firstly I’d look closely to make sure there is NO acid damage on the cpu board. No matter how small there shouldn’t be any.
Secondly I’d reseat the ribbon cable a few times between the cpu and yr new power board the cpu end certainly.

 

[Pooman2084]

Are there any burnt or black looking connectors or pins?

 

[handbaked]

Firstly I’d look closely to make sure there is NO acid damage on the cpu board. No matter how small there shouldn’t be any.
Secondly I’d reseat the ribbon cable a few times between the cpu and yr new power board the cpu end certainly.

Thanks for the info. I have done this and currently it is on, just waiting to see if it resets still or not.

 

[handbaked]

Are there any burnt or black looking connectors or pins?

not that I can see.

 

[s000m]

Can you provide a picture of your ribbon cables?

If they are old and chewed (crumpled and knackered) then I would start there.

If they are good, take them off, clean the connector headers from the MPU --> Flipperboard --> Sound Board --> DMD Driver Board

Also clean the headers from the MPU --> Driver Board

New ribbon cable set is about £40 from PBH.

 

[s000m]

I was also going to say check the caps and bridge rectifiers on your driver board but you already got a rottendog board.

My moneys on the ribbon cables/headers.