Sony KDL-40XBR6

[bjorkson]

Hi, just pickup a Sony LCD Bravia, plugged in and turn on, getting the 6 blinking lights which could indicate panel, inverter board issue. Measure on PS board, and only getting 60V AC instead of 120V coming in. Is that normal?

[selldoor]

Re: Sony KDL-40XBR6

Not normal if you are testing correctly and your meter is ok
You must keep in mind we cant see what you are doing or what you are doing it on. Suggest you post good clear pictures - one of the rear of the set with back off and one of each board.

[bjorkson]

Re: Sony KDL-40XBR6

Here are some pics

[bjorkson]

Re: Sony KDL-40XBR6

Both reading on the power cord probe coming into the PS and also the fuse that is next to it is giving me a 60V AC reading. I suspect it to be the PS board or the inverter. Without enough voltage coming out of my PS, it that why the inverter and backlight does not want to kick on?

[bjorkson]

Re: Sony KDL-40XBR6

Here is a picture of the all the boards.

[tom66]

Re: Sony KDL-40XBR6

If you are measuring live to chassis, 60V is expected for singly isolated (non earthed) equipment.

[bjorkson]

Re: Sony KDL-40XBR6

OK..that's what I did. So, that is normal. So, when I probe into the main, now I'm getting the 120V (+- 10V) so power coming in is normal. Now when I probe my fuse next to it from both end, getting down to a 0 reading. But when I ground my black lead to chasis, getting 60V. Any thoughts?

[selldoor]

Re: Sony KDL-40XBR6

You are doing really weird testing?

[bjorkson]

Re: Sony KDL-40XBR6

sorry to confuse you

[tom66]

Re: Sony KDL-40XBR6

Just test fuse with TV unplugged on ohms range.

[bjorkson]

Re: Sony KDL-40XBR6

Ok...is this normal

[budm]

Re: Sony KDL-40XBR6

That main AC fuse must be good, otherwise you will not be seeing the 6-blink error code.

[bjorkson]

Re: Sony KDL-40XBR6

Ok, does anyone have a way to test if my inverter baord is bad. Model A-1552097B

[bjorkson]

Re: Sony KDL-40XBR6

Sorry, that's my power supply board A-1552097B. My inverter board is F10V0489-07

[selldoor]

Re: Sony KDL-40XBR6

What worries me is that if you do not know if a fuse is good or not how do you expect to repair a TV? Are you aware that heatsinks can carry a voltage that will give you a good kick and that could knock you onto some other parts that can kill?

For some basic part testings try reading this - start at post19
https://www.badcaps.net/forum/showthread.php?t=10419

Have you looked up what 6 blink error code means on sony tvs?

[bjorkson]

Re: Sony KDL-40XBR6

yes, I know. Sorry I was confused at first, Im not a electrical engr by trade. Sorry.

[bjorkson]

Re: Sony KDL-40XBR6

Sony 6 blinks could mean the main board, PS, inverter or balancer board.

[bjorkson]

Re: Sony KDL-40XBR6

Sorry to trouble you guys, I will investigate further when I have time. Will let you know the outcome. Since I travel for work alot, don't really have alot of time. Will update you guys later. Thanks for all your help.

[momaka]

Re: Sony KDL-40XBR6

Disconnect the T-con board from the pannel boards. Pannel boards are likely located under a metal shield at the top of the TV. The T-con is also under a metal shield - the one right above the power supply board at the center of the TV.

After this, try to power on the TV and see if it turns on (NOTE: you won't see any picture, but look for a green light on the front of the TV) or if error code changes.

[bjorkson]

Re: Sony KDL-40XBR6

OK, I will try this when I get home tonight. By unplugging the Tcon board and testing the tv, what does this test prove?