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

[shelby5041]

oCosmo Model CE4001-HM06P7A,.

...completely dead..no standby light..no clicks nothing

..originally the hdmi port fried..u can see burn marks and old main board is fried in that area..

.replaced with another main board and now tv is 100% dead.....

[budm]

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

Pictures of the whole back side of the TV so we can see all the boards, then good clear pictures of the whole board for each board.

[shelby5041]

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

with the ps out of tv and plugged in i get no 5v standby

should i be able to test board out of tv?

im just touching red to 5v pin and black to a metal component on the board

[shelby5041]

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

update....

when i test for 5v on the main board with fried hdmi i get 5v

when i test for 5v on the replacmenet board i get 0v on the 5v pin

[shelby5041]

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

was hoping maybe i could use a part from the board that i get 5v and install on the board with no 5v

can anyone tell me if there is a component i could look at for being defective on the board with no 5v

[budm]

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

We are working blind without the pictures.

[shelby5041]

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

i posted photos

[shelby5041]

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

look up top......

[shelby5041]

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

can u point out the voltage regulator from primary to secondary on the board so i can test it...

[shelby5041]

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

hey budm i posted a another thread for the cosmo tv issue by itself if u go see that it will help

thanks

[shelby5041]

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

hey bud m this tv only has one board

the ps main inputs and led driver all on same board

cheap ass tv

was wondering if someone could guide me to find what part is bad on the replacement board i got that has no standby v at all and does have 170v coming from 2 large main caps...the 4 caps in middle of board are also way way low in v....

thanks

[budm]

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

Is this the board you got fro shopjimmy?
http://www.shopjimmy.com/ocosmo-a130...1-hm06p7a.htm#
I need good clear pictures of the bottom side of the board, the pictures from shojimmy has black insulator blocking the traces to see what drives the power transformer.
pictures provided by shopjimmy.

[shelby5041]

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

here are some pics

board # a13082145

[shelby5041]

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

s

[shelby5041]

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

z

[shelby5041]

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

i have an old crappy phone trying to take some better photos and the lighting here is causing reflections

[momaka]

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

Will need better pictures than this. I can't read anything on the board, so I can't tell you what voltages to check.

The board appears to be a single-supply board (i.e. standby and main supply are one and the same). First thing I would suggest you do on the replacement board is change the caps. I can't see what brand they are, but they don't look like they are one of the good brands. Next, check voltage output on those axial diodes to the left of the transformer as well as the TO-263 component (likely a diode) right above them. Report what voltages you get.
I also see several buck-type DC-DC regulators (the inductors in the lower left and upper right corners of the board) as well as more than a dozen linear regulators in SOT-223 package. Again, you need to check input and output voltages on those. Google their part numbers to see what they should be outputting (if they are fixed regulators, that is). Post your findings here.

*edit*
Never mind what I said about the pictures .

[shelby5041]

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

c

[shelby5041]

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

thanks..i tested the caps using esr meter and they test good out of circuit

i do have another board like this that i get good voltages but it has a fried hdmi so it wont power up...i was hoping i could find the bad part and swap it out

[shelby5041]

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

yes bud m that is the board i have