SONY KDL-32BX300 fault help

[ivtec]

Hi guys:my friend brought me this Sony KDL 32BX300 and this fault seems to a Synchro fault see video the sound is not from the tv .



https://www.youtube.com/watch?v=pZ85...ature=youtu.be

[ivtec]

Re: SONY KDL-32BX300 fault help

Hi guys you have not even a clue?,i opened it up and don't see any bad caps,i checked the converter board caps and all good ,this is a sync issue in old tubes that was the vertical IC on this ones have no idea

[vinceroger69]

Re: SONY KDL-32BX300 fault help

I have never seen that fault before. if this was my set i was working on i would try a mainboard swap if its a reasonable price.

[ivtec]

Re: SONY KDL-32BX300 fault help

I have never seen that fault before. if this was my set i was working on i would try a mainboard swap if its a reasonable price.

Thanks bro i have the board out and will check it out ,about getting another board,there are none cheap,the cheapest is 45 bucks and out of stock,will look in my scrap, maybe i have any who knows,i have a lot of boards,will see,thanks

[vinceroger69]

Re: SONY KDL-32BX300 fault help

im not sure if its possible a firmware fault could cause this? does heating or freezing the mainboard change what your seeing on the screen

[nomoresonys]

Re: SONY KDL-32BX300 fault help

Hard to tell, I would try a firmware update/reapply, if for nothing else just to rule it out.

[ivtec]

Re: SONY KDL-32BX300 fault help

Hi guys update about Sony KDL-32BX300,i took out main board and went through all caps and did not find none bad,so i put board in place and turned tv on and tv doesn't have the sync issue no more it works fine on all inputs ,go figure,

[nomoresonys]

Re: SONY KDL-32BX300 fault help

May have just been a loose connection.

[ivtec]

Re: SONY KDL-32BX300 fault help

May have just been a loose connection.

hope so,been working for a couple hours so far so good.

[budm]

Re: SONY KDL-32BX300 fault help

May be board mounting screws are not tight so it get bad ground connections between the boards and the chassis. Keep an eye on them.

[ivtec]

Re: SONY KDL-32BX300 fault help

May be board mounting screws are not tight so it get bad ground connections between the boards and the chassis. Keep an eye on them.

Thanks budm ; well i had taken out main board for inspection and put it back so it might had help connections,who knows,it's been working great so far,thanks