Here's a strange one.
Nice looking HP widescreen, message pops up constantly "OSD Lockout"
According to Google it's a fairly common problem.
Reset doesn't help. Disassembled - someone has been in here before, foil tape is pretty mangled. Most of the power/inverter board caps are Rubycon, 'cept the 4 at the power output connectors, they're elite.
I replace those, and 1 on the main board that reads questionably.
Re-assemble, same problem.
According to some HP documents this problem can happen if the menu button is held down too long, so I decide to check the controls.
I disassemble again and this time take out the control PCB that's between the main back housing and the middle that the bezel snaps on to. (shoulda taken photos, it's a weird setup. Anyway, I check the switches, all ok.
Power it up on the bench with the control board dangling from the wires, so I can scope the outputs, and it works great!
After a day of testing, I re-assemble and it's still working.
I figure either a plastic button that actuates the switch was stuck, or maybe the connector wasn't making proper contact.
Nice looking HP widescreen, message pops up constantly "OSD Lockout"
According to Google it's a fairly common problem.
Reset doesn't help. Disassembled - someone has been in here before, foil tape is pretty mangled. Most of the power/inverter board caps are Rubycon, 'cept the 4 at the power output connectors, they're elite.
I replace those, and 1 on the main board that reads questionably.
Re-assemble, same problem.
According to some HP documents this problem can happen if the menu button is held down too long, so I decide to check the controls.
I disassemble again and this time take out the control PCB that's between the main back housing and the middle that the bezel snaps on to. (shoulda taken photos, it's a weird setup. Anyway, I check the switches, all ok.
Power it up on the bench with the control board dangling from the wires, so I can scope the outputs, and it works great!
After a day of testing, I re-assemble and it's still working.
I figure either a plastic button that actuates the switch was stuck, or maybe the connector wasn't making proper contact.