rmackie6661
Active member
GO7 high voltage Shutdown Problem from Hell HELP!!!
I have myself a pair of GO7's that I just cannot figure out. hopeing anyone might have some clues or hints.
The first one
shutdown with 160dc at the VR and the white WR resistor. I'm getting volts all over the board too. Took X701 out and it powers up awesome at 120v. put back in and nothing, in HV shutdown. Here's what I've tried and tested good.
New Power Reg, all the wire wound resistors, all the diodes, IC501, T501, X901, X902, X501, X701, filter cap and all other caps, new R908, New Hot, T502, i've checked the larger resistors too in the 900 area. All traces are good too. I've spend prob 6hrs on this stupid thing.
number two
HV shutdown mode with 160 a the VR and white resistor pull X701 and i get rester but it's scrambled and at 160v still cannot adjust.
This one I changed and checked everything again just like the top and it's got a new flyback too.
Any ideas? my only thoughts were what are those little black bowling ball looking things by the flybacks. they say something like vr### on them.[/
I have myself a pair of GO7's that I just cannot figure out. hopeing anyone might have some clues or hints.
The first one
shutdown with 160dc at the VR and the white WR resistor. I'm getting volts all over the board too. Took X701 out and it powers up awesome at 120v. put back in and nothing, in HV shutdown. Here's what I've tried and tested good.
New Power Reg, all the wire wound resistors, all the diodes, IC501, T501, X901, X902, X501, X701, filter cap and all other caps, new R908, New Hot, T502, i've checked the larger resistors too in the 900 area. All traces are good too. I've spend prob 6hrs on this stupid thing.
number two
HV shutdown mode with 160 a the VR and white resistor pull X701 and i get rester but it's scrambled and at 160v still cannot adjust.
This one I changed and checked everything again just like the top and it's got a new flyback too.
Any ideas? my only thoughts were what are those little black bowling ball looking things by the flybacks. they say something like vr### on them.[/