I was looking to buy a Fishtales and when I opened up the backbox I fount a previous owner had bypassed the driver board 5volt and added a secondary transformer/power supply in the cabinet. I have heard of this additional power unit being added to supply power for mods but have never seen this configuration to supply 5V to the CPU. The current owner says he bought it this way and the game runs fine.

So how much of an issue is this? Would you buy knowing that the game driver board is most certainly not supply 5V? Would you leave it as-is if you did buy it? I have rebuilt many boards and doing a rebuild on the driver board is well within my scope of my capability.

The current configuration is certainly an interesting way to solve reset problems, kind of like the Kahr daughterboard only more convoluted. It is ugly but for someone, without the skills to do board work, it fixed it. I am interested in opinions. Thanks in advance.

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Thanks, folks.
He is asking $3200 for this player's condition Fishtales.
Rebuilding the driver board correctly would be $50ish in parts and some time.