Sony KDL-46S4100 no pic or sound help.

[ivtec]

Hi guys ;today during my morning exercise walk i came across a Sony Bravia
KDL-46S4100 that was dumped on the side of one of those yellow dumpsters,i had to care it back to my house about a quarter mile on my back,
turned it on and it clicks and get power on green led and the back light in on,so before i open it up please tell me it's worth to repair and where to start.
For some research i suspect the A main board, which i can get from here
http://www.shopjimmy.com/sony-1-857-...dl-46s4100.htm

i appreciate any clues,thanks

[ivtec]

Re: Sone KDL-46S4100 no pic or sound help.

Hi guys is this Sony KDL-46S4100 firmware still usable on this Bad Caps page?


https://www.badcaps.net/forum/showth...t=41778&page=2

[ivtec]

Re: Sone KDL-46S4100 no pic or sound help.

HI Guys anybody there! not a pip on this Issue?

[snme]

Re: Sone KDL-46S4100 no pic or sound help.

Is this model like some other Sony KDL's that would present a blinking red LED error code upon some fault conditions?

[budm]

Re: Sone KDL-46S4100 no pic or sound help.

Backlights but no image on the screen then you should find out if you do have 12VDC on both ends of the SMD fuse on the T-CON board with ref to chassis GND.

[ivtec]

Re: Sone KDL-46S4100 no pic or sound help.

Is this model like some other Sony KDL's that would present a blinking red LED error code upon some fault conditions?

Thanks there is no led blinking just a steady green led,i turn on tv power supply turns on with steady green led and black light on no pic or sound , it's pretty much what happens in this video,i took the main board out and i found out that the tuner coaxial cable input is twisted and the ground is almost all cut,but i don't think that is enough for this fault!check pic,i ordered Main board for 50 bucks and will check if i got lucky like some of the folks with same symptom.



https://www.youtube.com/watch?v=KmL1YtU5occ

[ivtec]

Re: Sone KDL-46S4100 no pic or sound help.

Hi guys i received from Jimmy parts today the A board for KDL-46S4100 - no picture and no sound but did get steady green light on and could power on and off,with back-light on, and installed and no luck same issue;how i know that this board is not faulty too?or should i look at other Board?thanks in advance.

[ivtec]

Re: Sone KDL-46S4100 no pic or sound help.

Backlights but no image on the screen then you should find out if you do have 12VDC on both ends of the SMD fuse on the T-CON board with ref to chassis GND.

Hi budm; what # on the Tcon board is the fuse? thanks, you think i shoud order the T-con to?



http://www.shopjimmy.com/catalogsear...L-46S4100+tcon

[Diah]

Re: Sone KDL-46S4100 no pic or sound help.

if after replace parts and you do have steady green led on and off, and BL okay, check the sound, if okay, then you need T-CON

[budm]

Re: Sone KDL-46S4100 no pic or sound help.

White fuse FP1 (3A) to the left of the LVDS connector CN1.

[ivtec]

Re: Sone KDL-46S4100 no pic or sound help.

White fuse FP1 (3A) to the left of the LVDS connector CN1.

Thanks budm; i have 11.60v at fuse FP1,
i lifted the T-con board CN1 measured after connected my Roku 1 to HDMI and turned tv on i had a menu asking to set languish then i was happy that i had it working,put board in place turned tv again and i was stuck on same issue,
maybe this is a software issue! what should i do next? thanks.

[ivtec]

Re: Sone KDL-46S4100 no pic or sound help.

if after replace parts and you do have steady green led on and off, and BL okay, check the sound, if okay, then you need T-CON

Hi Diah;How can i check if it has sound?

[budm]

Re: Sone KDL-46S4100 no pic or sound help.

Did you try reseating all the cables and make sure all the board mounting screws are tight? You may have bad connections somewhere.

[ivtec]

Re: Sone KDL-46S4100 no pic or sound help.

Did you try reseating all the cables and make sure all the board mounting screws are tight? You may have bad connections somewhere.

Thanks budm, i think all cables are well connected;
i came across this link with almost same fault with tips to see if T-con board is ok but the difference mine has back-light on , the tech says to remove one side of CN1 and wiggle in and out on right side,i did that and i could see raster with some pattern lines also i could see for a moment with raster with on OSD.
so this means T-Con broad is ok?,maybe CN1 cable is bad?
i really don't know what to do,i like this tv and already put 50 bucks the A board,what do you think i should do? any other tips,all referenced voltages are good.
maybe also the LCD Panel assembly is bad since there is no sound?any other thoughts i would appreciate.

http://www.justanswer.com/tv-repair/...d-46s4100.html

[ivtec]

Re: Sone KDL-46S4100 no pic or sound help.

Hi budm; any finally advice before i dump this TV? thanks

[nicholas1110]

Re: Sone KDL-46S4100 no pic or sound help.

Hi, have you tried a firmware update? I know you asked about it before but you didn't say if you tried it. It's sounds like the issue with your tv. Here's a link to to file and instructions. https://www.badcaps.net/forum/showpo...9&postcount=59

[Alastair E]

Re: Sone KDL-46S4100 no pic or sound help.

Set worked with T-Con loose--but not when reassembled...?

I would be checking for shorts to the chassis or tinwork T-Con cover....

[ivtec]

Re: Sone KDL-46S4100 no pic or sound help.

Set worked with T-Con loose--but not when reassembled...?

I would be checking for shorts to the chassis or tinwork T-Con cover....

Thanks Alastair; i did not say it worked, i said when i giggled or pull in and out on one side of the cn1 plug,see tech link;i had the OSD and some time of grey pattern but just for a second on some position,it also sounds to me that there is a short somewhere either T-con Assembly or LCD itself is short or it could be the LVDS cable,

http://www.justanswer.com/tv-repair/...d-46s4100.html

[ivtec]

Re: Sone KDL-46S4100 no pic or sound help.

Hi, have you tried a firmware update? I know you asked about it before but you didn't say if you tried it. It's sounds like the issue with your tv. Here's a link to to file and instructions. https://www.badcaps.net/forum/showpo...9&postcount=59

Thanks nicholas1110; i already tried the firmware but no avail,

[Diah]

Re: Sone KDL-46S4100 no pic or sound help.

1- disconnect both ribbon cable from T-CON to LCD, and inspect them if there any line missing or became short not to the end of the cable.

2´- keep them out and play signal from outsource to HDMI 1, you should hear the sound. if yes, get the ribbon cable back, if no Picture you have T-CON fault. or bad soldering, reflow it witth heat gun.. give try you will not lost ..