lcd tv issues with sony KDL-46EX645, oCosmo Model CE4001-HM06P7A, jvc LT-50A330

[shelby5041]

Re: lcd tv issues with sony KDL-46EX645, oCosmo Model CE4001-HM06P7A, jvc LT-50A330

very odd...the board with the fried hdmi port seems to have voltages everywhere....i get 36v going to led......i have never tested tv with the board with the fried hdmi port...could the tv actually work with that bad board?....i got the tv from someone who had the...whic replacmeent board in it which is dead with that board....

he never told me why he repalced the board in the first place...but he gave me the board with the fried hdmi port anyways....

[shelby5041]

Re: lcd tv issues with sony KDL-46EX645, oCosmo Model CE4001-HM06P7A, jvc LT-50A330

ok...i tested the 2 large caps on the ocosmo board

i get about 163v on the replacement board and i get 163v on the board with the fried hdmi

[freakaftr8]

Re: lcd tv issues with sony KDL-46EX645, oCosmo Model CE4001-HM06P7A, jvc LT-50A330

okay so this means that your primary side is functioning so we have to figure out where your standby voltages are. Is there a part number on that board?

[shelby5041]

Re: lcd tv issues with sony KDL-46EX645, oCosmo Model CE4001-HM06P7A, jvc LT-50A330

ocosmo board A13082145

it does seem the fried hdmi one is getting voltages..but im sure it wont power tv on since hdmi is fried

but maybe if i found out which part is bad on the replacement board i can swap part?

[shelby5041]

Re: lcd tv issues with sony KDL-46EX645, oCosmo Model CE4001-HM06P7A, jvc LT-50A330

i have the board out of tv right now and im at work i can test if you let me know what to test...like i said the voltages coing out of te 4 caps in the middle are all way way way low

so if that helps

[freakaftr8]

Re: lcd tv issues with sony KDL-46EX645, oCosmo Model CE4001-HM06P7A, jvc LT-50A330

You could start by checking voltage regulators in the primary side or resistors for being an open circuit feeding the secondary side 5 volt standby.

[shelby5041]

Re: lcd tv issues with sony KDL-46EX645, oCosmo Model CE4001-HM06P7A, jvc LT-50A330

not sure how to test voltage reg or where they are and which resistors are you referring to

can u point out fomr my pic i posted?

[shelby5041]

Re: lcd tv issues with sony KDL-46EX645, oCosmo Model CE4001-HM06P7A, jvc LT-50A330

update.....sony kdl 46ex645 is a main board issue..the hdmi port is also fried....i get fgood coltages out of ps...so im pretty sure the main board is causing no standby light and wont power on...i do have standby voltage coming from ps....so


also the jvc tv i believe is a bad led driver board since i dont have any voltage going out of driver board but i do have 24v coming in


also the ocosmo tv is a main board issue also.....the replacement board that i have is bad...i get no standby voltage at all....but i do have good 170v coming out of primary side of board...and the 4 caps in the center of board i only have small voltages coming out of those....i am hoping to locate the bad part and swap it out with the fried hdmi board since i do get good voltages on it and standby light is on..but it wont power on ....i get good standby voltage...the fried hdmi must be casuing a power on issue

[shelby5041]

Re: lcd tv issues with sony KDL-46EX645, oCosmo Model CE4001-HM06P7A, jvc LT-50A330

bad news....the main board for the sony is like 120.00

looks like im not going to be fixing it...its not worth spending 120.00 on any lcd tv today

this sucks....the board should be like 40.00

there are none on ebay at all....shop jimmy has it but its expensive

[shelby5041]

Re: lcd tv issues with sony KDL-46EX645, oCosmo Model CE4001-HM06P7A, jvc LT-50A330

hey freak...the 2 large res are good......can u point out which component is voktage regulator on ocosmo board