Hi Guys,
Found a Bush LE-32GE11E 32" LCD tv while I was returning from the shops, screen looked intact so it came home with me.
Mains lead fuse had been removed so I suspected it had already had some sort of 'experience'.
Tried new fuse but no leds illuminated & no response to buttons.
Continuity of the mains lead to the psu - all ok.
PSU pcb soldered fuse (T3.15A 250Vac) - blown.
Top side PSU components visual inspection - ok.
Bottom side of the pcb is where the action has taken place and 4 surface mount components (resistors) have experienced some action and blackened the immediate area.
PSU markings;
PCB: MEGMEET MP123 REV:2.1 2011.01.06
Label: Model MP123-24T
Pictures:
TOP - I have drawn in the connections (I reassembled the tv and put it in the garage) and pcb markings. Connectors 2/3/4 go to the main board & 5/6 go to the backlight.
BOTTOM - this is where the frazzling has taken place. On the black plastic shield shield there is the main area where something has happened and then another patch which corresponds to component Q29 - this might just be a contact mark as Q29 looks pristine. (marking is;D446 BA2R1A).
BLACKENED COMPONENTS - R144/R145/R146/R147 - I can't read the values:
Any help/schematic/next steps - much appreciated as I would like to fix this rather than just get a replacement PSU.
Mainly because I'm unemployed at the moment and have no immediate rush for a tv, but it would be nice to get working and give to a friend to replace their ancient 'Techwood' lcd tv
Found a Bush LE-32GE11E 32" LCD tv while I was returning from the shops, screen looked intact so it came home with me.
Mains lead fuse had been removed so I suspected it had already had some sort of 'experience'.
Tried new fuse but no leds illuminated & no response to buttons.
Continuity of the mains lead to the psu - all ok.
PSU pcb soldered fuse (T3.15A 250Vac) - blown.
Top side PSU components visual inspection - ok.
Bottom side of the pcb is where the action has taken place and 4 surface mount components (resistors) have experienced some action and blackened the immediate area.
PSU markings;
PCB: MEGMEET MP123 REV:2.1 2011.01.06
Label: Model MP123-24T
Pictures:
TOP - I have drawn in the connections (I reassembled the tv and put it in the garage) and pcb markings. Connectors 2/3/4 go to the main board & 5/6 go to the backlight.
BOTTOM - this is where the frazzling has taken place. On the black plastic shield shield there is the main area where something has happened and then another patch which corresponds to component Q29 - this might just be a contact mark as Q29 looks pristine. (marking is;D446 BA2R1A).
BLACKENED COMPONENTS - R144/R145/R146/R147 - I can't read the values:
Any help/schematic/next steps - much appreciated as I would like to fix this rather than just get a replacement PSU.
Mainly because I'm unemployed at the moment and have no immediate rush for a tv, but it would be nice to get working and give to a friend to replace their ancient 'Techwood' lcd tv
Attached Files
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