Re: Sony Bravia KDL-46EX640 no power
http://www.ustvparts.com/apps/websto...utf8=%E2%9C%93 one there for 95 bucks, maybe one of the members here has one for sale, didn't see too many.
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Re: Sony Bravia KDL-46EX640 no power
As always be very careful when working on primary side of power supply, it can be deadly.Leave a comment:
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Re: Sony Bravia KDL-46EX640 no power
This is the Only Sony KDL post I can find.Sorry if I posted in the wrong place.
My Sony KDL-37EX403 LCD tv,won"t switch on anymore.When pluged in the power socket the Green light comes on for 2 seconds and then goes off and the Standby light comes on then Blinks for 7 times,if I press the power on on remote or side of tv the standby light blinks 3 times then pauses and repeats 3 blinks.
I dont know anything about tv"s but would be willing to repair the board if there is a KIT for my model.
Any Help would be great.Leave a comment:
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Re: Sony Bravia KDL-46EX640 no power
Ask shopjimmy how to update the firmware on this board.
You should probably open up the firmware somehow and edit the version of the firmware.Leave a comment:
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Re: Sony Bravia KDL-46EX640 no power
as stated, i want to try to change some parameters at the service menu section but problem is it wont save the settings. it will revert back to its original settings everytime. any other suggestions?Leave a comment:
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Re: Sony Bravia KDL-46EX640 no power
Did you manage to clear that Main Power error?
Some electronics, return to normal operation after clearing a previous error code.Leave a comment:
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Re: Sony Bravia KDL-46EX640 no power
as a summary for this specific problem of No power No standby problem:
1.) Bought power supply board from Shop Jimmy, problem is still the same.
2.) Bought Mainboard from another vendor though not brand new, the result is Power is
now OK as well as the standby voltage is now present. The "only" problem is the
that there are some "green lines" appearing on the screen. Please refer photos
posted. This Mainboard is actually from the 55" model of this TV series. Second, I
cannot change some parameters even following the manual on how to change some
parameters.
3.) Bought and LVDS cable from another vendor (another pullout from the same tv model)
Result is still the same.
4.) Bought T-Con board from another vendor (still another pullout), same result.
5.) Not yet convinced, bought another T-Con Board from Shop Jimmy, same result.Leave a comment:
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Re: Sony Bravia KDL-46EX640 no power
Update:
bought a t-con board from shop jimmy but the result is the same.
Leave a comment:
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Re: Sony Bravia KDL-46EX640 no power
Tom's spreadsheet:
https://www.badcaps.net/forum/showth...ma+spreadsheetLeave a comment:
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Re: Sony Bravia KDL-46EX640 no power
if VGMA 1,2 affect colour it would be interesting to run a test program. like i stated previously I had this issue on samsung and the cables were not seated properly even though they were in snug!Leave a comment:
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Re: Sony Bravia KDL-46EX640 no power
Here are some DC voltage outputs at the T-Con board:
Vss-7.5V = -7.57V
Vone_28V = 27.92V
AVDD_17V = 16.95V
HAVDD_8.5V = 8.50V
Vss1 = 0.044V
Vss2 = -7.56V
VDDAPLL_12 = 12.06V
VDD12_core = 1.20V
VDD12_AIPI = 1.204V
DVDD12_AIPI = 1.204V
VDD12_LVDS = 1.204V
INB+ = 1.085V
INC+ = 8.45V
WP = 3.342V
SCL = 3.327V
SDA = 3.328V
VOFFE = -11.96V
-INA = 7.27V
OUTA = 7.28V
HAVDD_2 = 8.5V
VCC_3.3V = 3.34V
VCC3.3_LVDS = 3.332V
VDD33_TTL = 3.336V
HAVDD_1 = 8.5V
VCC_1.8 = 1.87V
VCMOS1 = 7.27V
VCMOS2 = 7.27V
VrefL-L = 0.71V
VrefU_L = 8.05V
VrefL-H = 9.46V
VrefU-H = 16.24V
Vin = 12.35V
VGMA18 = 0.7V
VGMA17 = 3.188V
VGMA16 = 3.888V
VGMA15 = 4.288V
VGMA14 = 4.66V
VGMA13 = 5.35V
VGMA12 = 5.71V
VGMA11 = 6.19V
VGMA10 = 8.05V
VGMA9 = 9.47V
VGMA8 = 11.18V
VGMA7 = 11.62V
VGMA6 = 11.95V
VGMA5 = 12.58V
VGMA4 = 12.92V
VGMA3 = 13.29V
VGMA2 = 7.80V
VGMA1 = 7.27VLeave a comment:
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Re: Sony Bravia KDL-46EX640 no power
@ tibimakai: thanks for your input. I have problem saving the LVDS level. It keeps on going back to 25 even if I set it at 20.Leave a comment:
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Re: Sony Bravia KDL-46EX640 no power
In the error log, it seems like you have a main power error(001). I'm not an expert, but I would check all the voltages to make sure that is all fine and I would clear that error.
I would try adjusting the LVDS level.
I would measure gamma voltages on the T-con board also.Leave a comment:
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