oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

[budm]

Re: oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

I see QB101 (mounted on the black heatsink) on shopjimmy board but I do not see that on your board, I see QB102 on your board.
I also cannot see any SMPS IC on the primary side of the board.
Is the shopjimmy board the same as your board?

[shelby5041]

Re: oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

hi im sorry im very novice i dont know how to test the componenets you are referring to...are there any components i could start swapping??....most common ones that would cause no standby voltage from one board to the other?

[shelby5041]

Re: oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

yes same exact part# a13082145

[shelby5041]

Re: oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

mine has qb101 also under black heat sink

[shelby5041]

Re: oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

bud m the shop jimmy image u found is 100% exact as my board i just verified....not sure what u are referring to

[budm]

Re: oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

The label on the bottom side of the board is show as QB102 but labeled as QB101 on the top side of the board. Are there two devices mounted on that black heatsink?

[shelby5041]

Re: oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

my board has one device mounted under black heat sink

[budm]

Re: oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

Well, looking at the board right now I cannot see what is driving that POWER MOSFET's GATE pin (the device mounted on the heatsink) which drives the power transformer.

[shelby5041]

Re: oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

both of the boards i have say qb101 on top and qb102 on bottom

only one device under heat sink

[shelby5041]

Re: oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

i get like 160v on that device by mistake i was touching it and prob shouldnt have.....i touched middle leg and then touched other leg and got 160v or so

[shelby5041]

Re: oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

bud on the fried board i get like 36v and 12v output on the caps in middle but on the replacement board i only get 2v and 8v output from same caps

[shelby5041]

Re: oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

update

got replacement board today.....i installed it and i now get a standby light but tv will not power on......the original issue was a fried hdmi port and tv was completely dead no standby at all.........

any ideas?

could the replacement board be bad?...this tv only has one board that does it all

its power supply and main and input and led driver board all in one so its 100% responsible for powering on the tv

[ReeceyBurger123]

Re: oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

Tried unplugging Lvds and Leds to rule them out dragging Psu down ?

[shelby5041]

Re: oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

i diid disconnrt led ...no diff

ill try lvds

could the powet button board be bad?.....or unlikrly?.....is therr a way i csn force on msnuslly by jumpering pwr on?...to rule out pwr button board if so how

[shelby5041]

Re: oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

some tvs wont power on with certain cables unplugged right?

[shelby5041]

Re: oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

one more thing....i only have board mounted with 2 screws...missing 4 screws...this wouldnt cause anything would it?...ground or funky thing?

[freakaftr8]

Re: oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

Don't think so. If you have one screw in a ground lug you should be ok.

[freakaftr8]

Re: oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

Guess you should research out CN9 and find out where ps on pin is and check voltage there. Make sure your keypad is giving the power supply the on command

[shelby5041]

Re: oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

ok thanks...

[shelby5041]

Re: oCosmo Model CE4001-HM06P7A,....completely dead..no standby light....

hi i toook the board to work and broguh the power cord and power button assembly and ir board for the hell of it i hooked it up and tried to use the remote to power on and now i get the blue power light to come on...but this is outside of the tv....and prior to this i unhooked the lcd and led backlight when it was in the tv and used the power button on tv and still didnt work but now it works out of tv using remote

i havent tried remote at home....its very possible the power button board is bad???