Technics SX-PR270 Digital Piano - No Sound, No Lights

by Brasto
(Heemskerk, Netherlands)

My Technics SX PR-270 digital piano has no sound and the LED's do not light. (Except PWR ON LED is ON, and on the program section 2 LED are on - P.MEM and OTHER)

Resetting the SX PR270 gives no results.

All +/- 5 VDC OK, +/- 15 VDC OK

Amplifier is OK

DEMO does not run

RAM & ROM checks OK

All CPL CPSQ CPR checks fail; something is not driving the Gate Arrays IC1.

I would like to borrow Main Board for test or request someone to check my Main Board P/N SXPG 211491 in this machine.

I cannot and will not spend $500 for replacement board for the Technics SX PR-270 digital piano.

TIA
Brasto