studiopaul
Member
Purchased a non working UR.
HV board was in a box with BU406D removed..I have replaced with a new one.
SO
Never worked on the HV circuit before so wanted to see things to be careful of.
Reading through some of the upgrades for HV for well gardner at the moment.
here are my problems and or diagnosis.
Game board swapped in another machine = works great
Amplifone Deflection swapped in another machine = works great
I have no neck glow on this machine once all assembled and powered and no clicking/ticking as I would love to hear!!
Deflection LED = ON
HV board LED = OFF
Im getting a burning smell from HV ..powered off fast!!!
on inspection the power resistor closest the heat sink in center of PCB, shows to be burning the PCB.
also no static pop when grounding monitor under the suction cup.
Where should I start the diagnosis of the board?
And what precautions should i take.
thanks
HV board was in a box with BU406D removed..I have replaced with a new one.
SO
Never worked on the HV circuit before so wanted to see things to be careful of.
Reading through some of the upgrades for HV for well gardner at the moment.
here are my problems and or diagnosis.
Game board swapped in another machine = works great
Amplifone Deflection swapped in another machine = works great
I have no neck glow on this machine once all assembled and powered and no clicking/ticking as I would love to hear!!
Deflection LED = ON
HV board LED = OFF
Im getting a burning smell from HV ..powered off fast!!!
on inspection the power resistor closest the heat sink in center of PCB, shows to be burning the PCB.
also no static pop when grounding monitor under the suction cup.
Where should I start the diagnosis of the board?
And what precautions should i take.
thanks



