Gauges - some working, most not

[mgreatrix]

Just purchased a 99 Supra Comp w/ 400 hours.

Some of the gauges don't seem to be working. Definitely not working: fuel gauge and one of the two speedo's (other speedo seems to be working okay). Possibly not working: engine temp, oil pressure, battery voltage. Seem to be working well: tach, one speedo.

Marina service tech where I purchased the boat said gauge issues are being caused by a failed computer chip that controls the gauge cluster. Said it looks like the chip got wet. Replacement OEM chip they said would be $2K-$3K and it would take several months to get one in. Suggested I replace the entire gauge cluster with aftermarket set which would include all new gauges plus the chip that controls the gauges. Said this option would probably be closer to $1500, but they are still trying to source one.

Not sure what to do. Supra speedo's have calibration adjusters which I would like to still work when gauges are working properly (calibration works on the one speedo that is working).

I would be grateful for any guidance y'all could offer.