Garbled display on my dad's TZ. It's like this upon power up, so unable to run any tests on the display, such as Display Test, to see if the ram checks out ok.

I am 450 miles away, so I can't pop by anytime soon. Is there an easy way for him to verify whether it's the ribbon cable or the ram chips? Doesn't seem like it would be the Color DMD.

Or maybe one of you already knows what the problem is?

Thanks! IMG_2598 (resized).jpg

#2 2 years ago

F X

Coyote

Pinside member

9y 107K 8,987

Yeah, that's more than likely a ColorDMD issue; ribbon cable would give more noise, and bad ROM would be reported on startup.

#3 2 years ago

JWH

Shogun00

Pinside member

6y 60,550 948 60

A ribbon cable connected the wrong way can create a garbled screen.

#4 2 years ago

LTG

Pinside member

Hopkins, MN

12y 191K 56,974 24 7

You could try turning the game off. Reseat ribbon cables from CPU to DMD driver board to DMD.

Though I think you have a road trip in your future.

LTG : )

#5 2 years ago

BRG

IdahoRealtor

Pinside member

Eagle, ID

13y 137K 6,778 11 10

Quoted from Shogun00:
A ribbon cable connected the wrong way can create a garbled screen.

It had been fine for a while. I'll have him try to reseat it.

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