Hello,
I recently experienced a power outage and my taz4 (upgraded to taz5 extruder) started up with a blank flickering lcd and yellow led flashing on the mainboard. I figure it is likely something to do with either the power supply. Or something with the power circuitry of the the printer. I am looking for any troubleshooting guides I realize that the printer is 10 years old but any assistance would be greatly appreciated.