Hello, a tv repair place has identified my TCON board as being bad offered to fix it for 300 dollars, took the tv home and pulled the board, i am getting no continuity and my resistance is showing open through the F1 Fuse. On the surface of the fuse it say LF 7A, any idea as to a part number so i can order a new one? the model on the board is 404652ASNC6LV3.7.
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Re: Sony KDL46w4100 tcon board F1 fuse
You can try this:
http://www.digikey.com/product-detai...1CT-ND/1905919
You lay a new fuse on top of the old fuse and solder both ends to the old fuse.
The board may have short circuits, so order more then one.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809 -
Re: Sony KDL46w4100 tcon board F1 fuse
Just to check though - the symptom of the fault, no picture, but screen is lit up, and sound is present? Post a picture of the board, there could be a shorted ceramic capacitor on it.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Sony KDL46w4100 tcon board F1 fuse
Yes, those are the exact symptoms, turns on screen lights up, good sound, then after about 15 seconds it shuts off the standby blinks 14 times. Ill try to post a good picture of the boardComment
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Re: Sony KDL46w4100 tcon board F1 fuse
also how would i check a the capacitor?Comment
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Re: Sony KDL46w4100 tcon board F1 fuse
With a multimeter... but post some pictures so we can highlight the possible ones.
I guess the TV is shutting down because it is not seeing the T-con working. I have not worked on any Sony TVs so I don't know if this is how they do it. It seems kind of strange to me.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Sony KDL46w4100 tcon board F1 fuse
ok just one minute ill have a picture to postComment
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Re: Sony KDL46w4100 tcon board F1 fuse
here it isAttached FilesComment
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Re: Sony KDL46w4100 tcon board F1 fuse
This is going to be my first adventure into surface mount soldering so if you have any pointers there i appreciate itComment
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Re: Sony KDL46w4100 tcon board F1 fuse
Can you see those light brown rectangular shape, they should have something like Cxx next to them, they are MULTILAYER CERAMIC CAPACITORS (MLCC).
Set your Ohm meter to 200 Ohms range and just measure the resistance on both end of each cap, we are looking for something in less than 2 Ohms (the resistance had to be low enough to blow 7A fuse) if they are bad.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Sony KDL46w4100 tcon board F1 fuse
not sure what you mean about setting it to the 200 ohm range, the multimeter im using is a fluke 115 truerms multimeter when i set it to ohms it looks like it has an auto setting the the side it has a M and the ohm symbol. when i put that on any of the ones next to the fuse (c372. cd253) they read between 6 and 8Comment
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Re: Sony KDL46w4100 tcon board F1 fuse
but the fuse just reads OL as if it was openComment
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--- begin sig file ---
If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.
We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.
Please do not post inline and offsite as they slow down the loading of pages.
--- end sig file ---Comment
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Re: Sony KDL46w4100 tcon board F1 fuse
M ohms, at least the guy was honest, he said "we can fix it for 300 but i wouldnt recommend it. Since the screen itself is going bad, i just want to get this fuse fixed and hopefully buy a few months out of it.Comment
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Re: Sony KDL46w4100 tcon board F1 fuse
"but the fuse just reads OL as if it was open" that is correct reading since you have blown fuse.
I think you can activate manual range setting of your meter, see your user manual.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Sony KDL46w4100 tcon board F1 fuse
when i activate manual at the bottom it has a 6 and then when i press range again it goes to 6 0 then 6 0 0Comment
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Re: Sony KDL46w4100 tcon board F1 fuse
Lets do this, put meter in Ohm mode, then short the test leads together and then step through the range and tell us what you see.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
-
--- begin sig file ---
If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.
We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.
Please do not post inline and offsite as they slow down the loading of pages.
--- end sig file ---Comment
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Re: Sony KDL46w4100 tcon board F1 fuse
I have placed the fuse on top of the old one and soldered the ends, the tv fires up now and does the same thing it did before regarding lighting but no picture but the problem where it shut itself down has stopped. Any ideas?Comment
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Hi There,
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