bradc944 wrote:The Philips 212 replacement motor is on its' way here, looks like a simple drop-in... I *do* assume that the 2 black tacho leads are separated out like on the Fons motor harness?
bradc944 wrote:Well...... the Philips motor is in, things are wired up, and strange things are happening. I have some voltages that are strange, such as 22v going to the motor, instead of the 13v that should be there. The motor starts out fine, then goes into what best would be called 'runaway mode'. The voltage will drop if there is a load, but then ramps back up to 22v.
I trust nobody else has had this issue when using a Philips 212 motor as a replacement... maybe I should get another one in case the tacho pulse output is wonky...
post regarding the Philips GA212 motor incompatibility
The GA212 Tacho Control circuit differs substantially from the FONS and other Philips models.
The motors from Philips GA222, GA312 & GA406 should be 100% compatible.
Differential input phono amplifiers - the correct way of amplifying the output from a phono cartridge!