Sony KDL-46ex520

[nomoresonys]

Re: Sony KDL-46ex520

Discharging capacitors with a resistor, can be done in circuit: https://www.youtube.com/watch?v=2TcVZ2opuNc

[diif]

Re: Sony KDL-46ex520

I believe this is your service manual.

[nomoresonys]

Re: Sony KDL-46ex520

You are sure that you have 5 blinks and not 6?

[nomoresonys]

Re: Sony KDL-46ex520

According to service manual, 5 blinks indicates tcon error, page 24.

[Global Safari]

Re: Sony KDL-46ex520

Hi
Yes 5 blinks. No 12 volts to the T Con board.

[nomoresonys]

Re: Sony KDL-46ex520

5- times blinking Check PANEL_VCCat pin 1 of CN6001 on the B* Board which is the mainboard, page 24 service manual.

[budm]

Re: Sony KDL-46ex520

https://assets.shopjimmy.com/media/c...78-b-top_1.jpg
Did you check the fuses F6001, 002, 003 on that main board by the LVDS connector?
I suspect F6001.

[Global Safari]

Re: Sony KDL-46ex520

Maybe take the powerboard out and check underside for bad/cold solder joints, sometimes they look ok but can be loose, look closely at anything on a heatsink and the transformer legs joints, they take the most abuse, be very CAREFUL not to touch the HOT parts, they can hold a BIG charge for quite a while.

5- times blinking Check PANEL_VCCat pin 1 of CN6001 on the B* Board which is the mainboard, page 24 service manual.

Hi
That's where if all started.. no 12 vdc at that test point.
Kinda pointing to the main board. The fuses on this board are
Very small. Gonna just replace the main board

[nomoresonys]

Re: Sony KDL-46ex520

I would have felt better about it being the mainboard if we could have proven the backlights and powerboard somehow, those fuses are small but pretty easy to check.

[Global Safari]

Re: Sony KDL-46ex520

I can check them tomorrow. Not sure which ones I need to check.

[nomoresonys]

Re: Sony KDL-46ex520

Those 3 little ones in Buds post #27, check the link there's a clear picture there.

[Global Safari]

Re: Sony KDL-46ex520

Will do ..thanks.

[Global Safari]

Re: Sony KDL-46ex520

[QUOTE=budm;928797]https://assets.shopjimmy.com/media/c...78-b-top_1.jpg
Did you check the fuses F6001, 002, 003 on that main board by the LVDS connector

[nomoresonys]

Re: Sony KDL-46ex520

And?

[Global Safari]

Re: Sony KDL-46ex520

No chance last night.. will do after work tonight.

[Global Safari]

Re: Sony KDL-46ex520

Okay..just got home from work..I have put a red square around the 3 fuses in question.I wanted to make sure these are the 3 fuses in question.

[neilc6]

Re: Sony KDL-46ex520

F6001 is below the silkscreen. F6002 and F6003 have arrows pointing to them.

[budm]

Re: Sony KDL-46ex520

Those are caps.
See the fuses as marked in the picture.

[Global Safari]

Re: Sony KDL-46ex520

Gotcha..will check tonight...gotta make dinner.Will reply back with voltages when I get a chance tonight.

[Global Safari]

Re: Sony KDL-46ex520

Gotcha..I will check tonight..thanks again!! Are those replaceable?