Sony 32BX311 T-CON Board problem

[rawan]

Hi
I have sony 32bx311 ,with no video sound ok problem, when i switch on tv i can see white raster for a second and then nothing, only back light and sound ok.
On T-con board ,i have +12 v(Vin) only but no V-0FF ,no ha-vdd ,no V-ONE voltage.
I dont have schematics of T-CON board, Part no: Y320AN01S4

I have attach some picts. with voltage chart,witch i found from onther website,,
I just want to know V-OFF, V-ONE and HAVDD voltage generate from Main board or its always should be there??
Thanks
Any help please.
Mac

[Nick's Tvs]

Re: Sony 32BX311 T-CON Board problem

The Y320AN01S4 number you gave us I don't believe to be correct since it doesn't show any results related to T-cons.
With the tv off, remove the left ribbon between the T-con and the panel. Then boot up the set and see what happens. Turn the set back off and place the ribbon back in. Now do the same with the other ribbon. If you get half of the screen to turn on during this test then you have a bad panel. If the screen never turns on, then you have a bad T-con indeed and will need to replace it.

[rawan]

Re: Sony 32BX311 T-CON Board problem

Hello
sir,
I have attach zip file ,please have a look
Thanks
Mac

The Y320AN01S4 number you gave us I don't believe to be correct since it doesn't show any results related to T-cons.
With the tv off, remove the left ribbon between the T-con and the panel. Then boot up the set and see what happens. Turn the set back off and place the ribbon back in. Now do the same with the other ribbon. If you get half of the screen to turn on during this test then you have a bad panel. If the screen never turns on, then you have a bad T-con indeed and will need to replace it.

[Andrew F. Ali]

Re: Sony 32BX311 T-CON Board problem

Originally Posted by Nick's Tvs View Post

The Y320AN01S4 number you gave us I don't believe to be correct since it doesn't show any results related to T-cons.
With the tv off, remove the left ribbon between the T-con and the panel. Then boot up the set and see what happens. Turn the set back off and place the ribbon back in. Now do the same with the other ribbon. If you get half of the screen to turn on during this test then you have a bad panel. If the screen never turns on, then you have a bad T-con indeed and will need to replace it.

Do you have 12Vdc on both sides of the T-CON fuse with respect to chassis ground? If you do then you T-CON is bad....If you have the skill and tools to trouble shoot the T-CON Bd then look for a bad regulator...If not look for a working replacement T-CON Bd

[rawan]

Re: Sony 32BX311 T-CON Board problem

Hi Friends

i am uploading new image of that board with indication of voltages which is not there ,i have only +12 v.,

if u have a schematics of this board please upload. Thanks
Mac

[Andrew F. Ali]

Re: Sony 32BX311 T-CON Board problem

I don't understand....You have 12Vdc on one side of the Fuse F1....but don't have the other voltages you highlighted CKV1 and etc????

[rawan]

Re: Sony 32BX311 T-CON Board problem

Hi
I have just upload a image of board i have. i have 12v on both side of fuse but no any other voltages.
Thanks

[budm]

Re: Sony 32BX311 T-CON Board problem

Did you do as suggest in post 4 regarding to the two ribbon cable between t-con and the lcd panel?

[bjquines]

Re: Sony 32BX311 T-CON Board problem

There is no ribbon. 1 is going to the motherboard, the other on the LCD