More weirdness from my 15v2000. This time smoke...
Okay, after some valuable assistance from some great and knowledgeable KLOVers, there is another chapter to my 15v2000 saga:
It was looking great, and everything was going well. Then after a week or so, I started to get some different strange behavior:
At boot, the image grew to what I would describe as "Full bloom" within about 10 seconds of becoming visible (the middle third or so of the image fills the screen in both X and Y), and there is a bright dot in the center of the screen.
I got a whiff of "hot component" and shut the game down until I could look more closely. When that finally happened, I assumed it was the HV diode, so I replaced it. The behavior continued, but as the monitor was out of the cab, I was able to see a wisp of smoke emanating from R900 (the big resistor) on the HV board. The PCB was also a bit scorched where R900's legs are attached.
Some additional data: When I initially pulled the monitor apart to recap and clean it, I did not use any grease to re-pack the HV diode, nor did I use any when I installed the replacement. My understanding is that the dielectric grease is there to prevent corrosion, not to facilitate the connection (wrong?).
I also used some Goof-Off to clean the flyback connector and the surface of the tube around the anode. This is also how I cleaned the springs on the HV diode connectors.
Does anyone have any ideas about what might cause R900 to smoke?
Okay, after some valuable assistance from some great and knowledgeable KLOVers, there is another chapter to my 15v2000 saga:
It was looking great, and everything was going well. Then after a week or so, I started to get some different strange behavior:
At boot, the image grew to what I would describe as "Full bloom" within about 10 seconds of becoming visible (the middle third or so of the image fills the screen in both X and Y), and there is a bright dot in the center of the screen.
I got a whiff of "hot component" and shut the game down until I could look more closely. When that finally happened, I assumed it was the HV diode, so I replaced it. The behavior continued, but as the monitor was out of the cab, I was able to see a wisp of smoke emanating from R900 (the big resistor) on the HV board. The PCB was also a bit scorched where R900's legs are attached.
Some additional data: When I initially pulled the monitor apart to recap and clean it, I did not use any grease to re-pack the HV diode, nor did I use any when I installed the replacement. My understanding is that the dielectric grease is there to prevent corrosion, not to facilitate the connection (wrong?).
I also used some Goof-Off to clean the flyback connector and the surface of the tube around the anode. This is also how I cleaned the springs on the HV diode connectors.
Does anyone have any ideas about what might cause R900 to smoke?
