sony kdl-46w5100 no red light standby, on green off red light flash 14 times

[mydang]

Re: sony kdl-46w5100 no red light standby, on green off red light flash 14 times

I upload the t-con boad i suspect 2 resitor on the top and the bottom the same position from it
R16 and R315
tested with ohm metre 4k,40k,400k,40M,4000M and continuity but no sound no reading any number just OL
you think the resistor on t-con board shorted?

[mydang]

Re: sony kdl-46w5100 no red light standby, on green off red light flash 14 times

All you have to do is to measure the Voltage between the two legs of that diode you put in, that Zener is for protection, the circuit will function without it, you do not need to have that zener in place to test the D1N to see if it will work or not.
The VCC feeding that IC is 12V, the zener is rated at 15V just in case the 12V lost its regulation so it will be clamped down to 15V.

do you mean the D1N working without the zener diode althogh i replace one all ready shorted ?

[mydang]

Re: sony kdl-46w5100 no red light standby, on green off red light flash 14 times

Never jump the control pin directly to the Voltage source, especially with 12V, you can damage the receiving circuit, and if you accidentally jump to the wrong pin it will even worst which you can either damage the power supply or the circuit on the wrong pin you connected to. If you want to simulate the control signal, you MUST remove the cable or the wire to that control pin first, if you don't you will back feed the Voltage (especially when try using 12V as Voltage Source) back to the main board and damage the main board. You can use resistor (470 ~ 1K Ohm) between the control pin and the Standby power supply output pin.
For the backlights circuit to function, some inverter will need BL-ON and DIM control signal, it will depend on the design.
You can also solder two AA batteries in series and 100 Ohms resistor in series to provide 3V source to simulate control signal.

Thank i remember i will not do any more

[budm]

Re: sony kdl-46w5100 no red light standby, on green off red light flash 14 times

PFC 397 volt ok
tv-on or off at BL-on pin no volt alraedy checked
if i jump pin 12v or stand by pin to BL-on I see back light is flash and bright on tv screen not event hafl second

Never jump the control pin directly to the Voltage source, especially with 12V, you can damage the receiving circuit, and if you accidentally jump to the wrong pin it will even worst which you can either damage the power supply or the circuit on the wrong pin you connected to. If you want to simulate the control signal, you MUST remove the cable or the wire to that control pin first, if you don't you will back feed the Voltage (especially when try using 12V as Voltage Source) back to the main board and damage the main board. You can use resistor (470 ~ 1K Ohm) between the control pin and the Standby power supply output pin.
For the backlights circuit to function, some inverter will need BL-ON and DIM control signal, it will depend on the design.
You can also solder two AA batteries in series and 100 Ohms resistor in series to provide 3V source to simulate control signal.

[budm]

Re: sony kdl-46w5100 no red light standby, on green off red light flash 14 times

All you have to do is to measure the Voltage between the two legs of that diode you put in, that Zener is for protection, the circuit will function without it, you do not need to have that zener in place to test the D1N to see if it will work or not.
The VCC feeding that IC is 12V, the zener is rated at 15V just in case the 12V lost its regulation so it will be clamped down to 15V.

[mydang]

Re: sony kdl-46w5100 no red light standby, on green off red light flash 14 times

Right now it is pretty good that OP was able to find shorted out zener in D1N inverter board without guiding even though the blink code error (14-blink) has nothing to do with inverter board, so I hope he does not give up yet.

no no i will try my best ,, i donot give up soon Thx

[mydang]

Re: sony kdl-46w5100 no red light standby, on green off red light flash 14 times

What do you mean you cannot repair?

sorry i mean I am new leaner may be i can not repair it but i will try to understand from your experience and professional , Thank all your help Budm

[mydang]

Re: sony kdl-46w5100 no red light standby, on green off red light flash 14 times

But on that connector you suppose to have PFC Voltage around 390Vdc also for the inverter circuit.
BL-ON is from the main board, <1V = off, >2V = ON.

PFC 397 volt ok
tv-on or off at BL-on pin no volt alraedy checked
if i jump pin 12v or stand by pin to BL-on I see back light is flash and bright on tv screen not event hafl second

[mydang]

Re: sony kdl-46w5100 no red light standby, on green off red light flash 14 times

What is the P/N of your G board? G7N?
btw:
Since that reg 12V is the same reg 12V (see training manual) that feeds the T-CON, then I cannot see why you do not have reg 12v on CN6702.
Please read the training manual CTV59 page 19 I provide, it is important that you get the basic idea how the Voltages are routed through out the set.

sorry budm I checked it with pri-ground 12v at REG ok
PFC-out 397 volt

[mydang]

Re: sony kdl-46w5100 no red light standby, on green off red light flash 14 times

Thank you Budm and vincer, Today i double check I already checked I have all vcc 12v and REG 12 and PFC-OUT 397V all the voltage on CN from D1N and power supply seem ok ,, I agree with Vincer about Zener diode i remove fron the board to replaced for one on D1N inverter not correct 15 voltage , i think the one i remove from board 3 or 5 volt
may be it is not work right, so far Explain and send me schematic make me more understand ... i will learn from thall all gentlement here

[vinceroger69]

Re: sony kdl-46w5100 no red light standby, on green off red light flash 14 times

well once hes replaced that diode with the correct voltage replacement, lets hope we can help him find the problem with his set but like you say pictures do help just in case his boards dont match the schematics etc

[budm]

Re: sony kdl-46w5100 no red light standby, on green off red light flash 14 times

hi! Budm
TV turn on,at CN6702 no 12volt at REG 12v pin so what is wrong? and why i do not have volt at REG 12v pin ? Thx

What is the P/N of your G board? G7N?
btw:

checked t-con fuse is 12 volts

Thank you

Since that reg 12V is the same reg 12V (see training manual) that feeds the T-CON, then I cannot see why you do not have reg 12v on CN6702.
Please read the training manual CTV59 page 19 I provide, it is important that you get the basic idea how the Voltages are routed through out the set.

[budm]

Re: sony kdl-46w5100 no red light standby, on green off red light flash 14 times

I think he did because the reading on the VCC pin of the IC no longer show low resistance reading after the Zener is removed.

[vinceroger69]

Re: sony kdl-46w5100 no red light standby, on green off red light flash 14 times

did he remove and test the diode out of circuit? just in case a false reading

[budm]

Re: sony kdl-46w5100 no red light standby, on green off red light flash 14 times

Right now it is pretty good that OP was able to find shorted out zener in D1N inverter board without guiding even though the blink code error (14-blink) has nothing to do with inverter board, so I hope he does not give up yet.

[vinceroger69]

Re: sony kdl-46w5100 no red light standby, on green off red light flash 14 times

What do you mean you cannot repair?

I was just going to ask that question and also why no pictures have been uploaded of his tv bit odd if someone genuine wants help that none have been uploaded

[budm]

Re: sony kdl-46w5100 no red light standby, on green off red light flash 14 times

What do you mean you cannot repair?

[mydang]

Re: sony kdl-46w5100 no red light standby, on green off red light flash 14 times

I still need to see the pictures of the whole backside of the TV showing all the boards, and also board numbers.

although i can not repair but I start to learn from your experience

Thx

[mydang]

Re: sony kdl-46w5100 no red light standby, on green off red light flash 14 times

CN6702 of which board?

D1N inverter board

Thx

[budm]

Re: sony kdl-46w5100 no red light standby, on green off red light flash 14 times

I still need to see the pictures of the whole backside of the TV showing all the boards, and also board numbers.