Hello,
I have the HITACHI 42PD3000E Plasma TV that comes with the external "media box" called AV3000.
The behaviour is that when I power the TV set from the remote, sometimes it turns on and operates normally and other times it makes a "clicking" sound, like relays going on and off, and either turns on after some few clicks or repeats this loop. In most cases, it eventually turns on.
I did some research and someone suggested that the switching regulator MOSFET I901 and D911 Zener diode need replacing. I unsoldered the diode and tested it with polymeter, it looks fine. I have no clue on how to test I901.
All the capacitors look ok.
The attachment management keeps crashing on me when I try to upload schematics, I've uploaded them here . I am also attaching a picture of the power board in the AV3000 that shows some overheating strains in some parts in case you have a clue.
P.S: This TV set was meant to go to scrap and has been substituted. However I am starting practical electronics as a hobby and I was thinking it's a good start to start tinkering.
I have the HITACHI 42PD3000E Plasma TV that comes with the external "media box" called AV3000.
The behaviour is that when I power the TV set from the remote, sometimes it turns on and operates normally and other times it makes a "clicking" sound, like relays going on and off, and either turns on after some few clicks or repeats this loop. In most cases, it eventually turns on.
I did some research and someone suggested that the switching regulator MOSFET I901 and D911 Zener diode need replacing. I unsoldered the diode and tested it with polymeter, it looks fine. I have no clue on how to test I901.
All the capacitors look ok.
The attachment management keeps crashing on me when I try to upload schematics, I've uploaded them here . I am also attaching a picture of the power board in the AV3000 that shows some overheating strains in some parts in case you have a clue.
P.S: This TV set was meant to go to scrap and has been substituted. However I am starting practical electronics as a hobby and I was thinking it's a good start to start tinkering.
Attached Files