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

[budm]

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

INV-ERR is generated by the inverter circuit to tell the main board if there is problem in the inverter circuit or not. From my research, the normal Voltage of the INV-ERR should LOW if there is no problem with the inverter circuits.
'Backlight' = bl-on is the command signal from the main board to turn on the inverter circuit. You should leave he meter on that pin then turn TV on to see if the Voltage jumps up for seconds or not.

So did you replace that shorted out zener diode? Did you check the fusible resistor R6636? Did you check the Voltage by leaving the meter probe on the each pin of the connector CN660 when turn on the TV each time to see what you get, if look at the schematic I provided for the D1N board you can see that CN660 shows what Voltage you should have on the connector.

BTW, so far I do not see the pictures of the whole backside of the TV showing all the boards as requested.

D2N inverter board also has the same Zener diode on the VCC pin to clamp the Voltage on the VCC pin of the IC, you may want to check them out too.
Your TV uses two inverter boards for driving the lamps in push-pull mode so if one inverter board is bad you will see the screen lights up for seconds on one half of the screen (I.E left half or right half of the screen) that has good inverter board, did you notice that when you first turn on the TV? you have to do that in darken room.

[mydang]

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

INV-ERR is generated by the inverter circuit to tell the main board if there is problem in the inverter circuit or not. From my research, the normal Voltage of the INV-ERR should LOW if there is no problem with the inverter circuits.
'Backlight' = bl-on is the command signal from the main board to turn on the inverter circuit. You should leave he meter on that pin then turn TV on to see if the Voltage jumps up for seconds or not.

So did you replace that shorted out zener diode? Did you check the fusible resistor R6636? Did you check the Voltage by leaving the meter probe on the each pin of the connector CN660 when turn on the TV each time to see what you get, if look at the schematic I provided for the D1N board you can see that CN660 shows what Voltage you should have on the connector.

BTW, so far I do not see the pictures of the whole backside of the TV showing all the boards as requested.

D2N inverter board also has the same Zener diode on the VCC pin to clamp the Voltage on the VCC pin of the IC, you may want to check them out too.
Your TV uses two inverter boards for driving the lamps in push-pull mode so if one inverter board is bad you will see the screen lights up for seconds on one half of the screen (I.E left half or right half of the screen) that has good inverter board, did you notice that when you first turn on the TV? you have to do that in darken room.

---------------
INV-ERR is generated by the inverter circuit to tell the main board if there is problem in the inverter circuit or not. From my research, the normal Voltage of the INV-ERR should LOW if there is no problem with the inverter circuits.
'Backlight' = bl-on is the command signal from the main board to turn on the inverter circuit. You should leave he meter on that pin then turn TV on to see if the Voltage jumps up for seconds or not.

So did you replace that shorted out zener diode?=(I do not have 15v zener diode in my hand, temporary just replaced one took off from different board but I donot know value of volt)I alrady order ebay and waiting- Did you check the fusible resistor R6636? (I check R6636 good and has continuity)Did you check the Voltage by leaving the meter probe on the each pin of the connector CN660 when turn on the TV each time to see what you get, if look at the schematic I provided for the D1N board you can see that CN660 shows what Voltage you should have on the connector. (CHECKED cn660-pri-vcc- 12v tv on) will check pfc and let you know thx

BTW, so far I do not see the pictures of the whole backside of the TV showing all the boards as requested.

D2N inverter board also has the same Zener diode on the VCC pin to clamp the Voltage on the VCC pin of the IC, you may want to check them out too. I will check vcc ic pin connect to zener diode and let you know Thx
Your TV uses two inverter boards for driving the lamps in push-pull mode so if one inverter board is bad you will see the screen lights up for seconds on one half of the screen (I.E left half or right half of the screen) that has good inverter board, did you notice that when you first turn on the TV? you have to do that in darken room.
I WILL FOLLOW YOUR INTRUCTION AND CATCH UP STEP BY STEP FROM YOUR HELP Thank Budm

[mydang]

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

'Backlight' = bl-on is the command signal from the main board to turn on the inverter circuit. You should leave he meter on that pin then turn TV on to see if the Voltage jumps up for seconds or not.
((TV On or Off checked BL-on no voltage,,usually how many volt go to this Bl-on pin ? and where is the voltage come from inverter or from power su board?
Although tv on or off, THE PROLEM IS NO VOLT at BL-on

Thx Budm

[mydang]

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

Hi! Budm so far i look at schematic D1N inverter when tv on i should have 12v volt at REG 12v of CN6702 i do not have volt at BL-on because it connect to REG 12v i will trace and test let you know

[budm]

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.

[mydang]

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

Hi! Budm more understand when i look at D1N inverter board , may i have one power supply detail like D1N i google but i canot find if you have send me one please
Thx

[budm]

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

Hi! Budm more understand when i look at D1N inverter board , may i have one power supply detail like D1N i google but i canot find if you have send me one please
Thx

I do not understand, I already provide the schematic for the D1N board in post 10 and also the training manual in post 21.
And D2N on this post.

"may i have one power supply " what one power supply? what is the P/N as printed on the board?

[mydang]

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

[budm]

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

CN6702 of which board?

[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.

[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

[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

[budm]

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

What do you mean you cannot repair?

[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

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

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

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.

[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.

[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

[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