Had the same issue present on my PVM-14M2U. Checked R598 and it had failed open as well. Thanks for the detailed post and follow-up on resolution, fabiodl. Saved me a lot of time!
Had the same issue present on my PVM-14M2U. Checked R598 and it had failed open as well. Thanks for the detailed post and follow-up on resolution, fabiodl. Saved me a lot of time!
Happy to hear this! It took me the whole Christmas holiday to spot that sucker!
I have a 20m2u that was stuck in protection mode, I brought it back to life with a deflection recap but after 30min of the pvm being on I watched the image stretch/distort horizontaly on the bottom of the raster, then the image vibrated and jumped around vertically for a minute or so then went into a full vertical roll.
V hold has no affect other than slowing the rolling.
Rechecked all the caps I installed. Ive recapped dozens of crt's and consoles and confident its not the recap job.
I suspected I lost vertical sync and so replaced the sync seperator IC chip. Same problem.
I have vertical rolling with all input sources and even the menu isnt stable now.
Im wondering if its in the V oscillation circuit now but seen this post and figured id check out R598 but cant find it. Service manual shows its near q517 which is for h-v phase lock but couldnt spot it either.
Is R598 a surface resistor? Top or bottom of the board?
Any other ideas? I dont have a scope yet and grasping at straws. After the recap I dialed in geometry,focus, and picture and it looked fantastic untill the component failure, I hope to save this monitor .... The tube was bright and vibrant.
Any help is appreciated!