KDL-60W600B won't open just Red Blinks 6 times

[budm]

Re: KDL-60W600B won't open just Red Blinks 6 times

At this point you just need to find the way to put in that resistor to test, if the board comes alive then I hate to buy new board due to faulty resistor, ZENER, or the IC.
There are two big pads that you can solder the resistor to for testing.

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

So i can solder the resistor on above marked two points in picture which you draw right?
Please check below picture, its correct how you saying right?

[budm]

Re: KDL-60W600B won't open just Red Blinks 6 times

Verify that the meter shows 0 Ohm between the left of the resistor and pin 24 to make sure it has correct connection and good solder works.

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

Its showing o.06 ohm if it put probe one on 24 pin other isup leg of resistor i.e near to ic side, if i put probe on down side that it shows 4.4 ohm, so is that correct

[budm]

Re: KDL-60W600B won't open just Red Blinks 6 times

Good!, now power up the TV and turn it on, keep an eye on the resistor to see if you will get the backlights or if the resistor will smoke due to bad IC, cap, or Zener.

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

Ok going to check now and get back in few moments,
Thanks

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

Yep, smoke come out while plugin tv to power, even i not open power on tv yet, i quickly unplugged tv from power.

[budm]

Re: KDL-60W600B won't open just Red Blinks 6 times

Remove that Zener Diode (it is second one on the left of the 4.7 Ohms, you have the resistor, cap, zener) and then check the resistance between Pin 24 and GND to see if it will show low resistance or not. There is nothing for you to lose at this pint since we know now that we have bad component in that section. Hopefully it will be bad Zener

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

Ok but now that resistor which we solder showing 34.5 ohms reading so do i need to replace this one also?

[budm]

Re: KDL-60W600B won't open just Red Blinks 6 times

Yes, it failed the same way as the original one. see my other reply post 108 also.

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

ok i got it, will replace resistor with new one, BTW i not got which one is Zener Diode which i need to removed, in below picture i mark yellow & red, please point out me which one is Zener Diode,
Thanks

[budm]

Re: KDL-60W600B won't open just Red Blinks 6 times

The one below.
https://www.badcaps.net/forum/attach...9&d=1502585498

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

Ok Its showing o.06 ohm if it put probe one on 24 pin other isup leg of resistor i.e near to ic side, if i put probe on down side that it shows 4.4 ohm, so is that correct
Below is picture, pls verifying whether i removed zener correct,
Waiting for your reply,
Thanks.

[budm]

Re: KDL-60W600B won't open just Red Blinks 6 times

You need to check the resistance of the Zener diode that you removed to see if it is shorted or not. Then also check the resistance between pin 24 VCC pin and the pin 23 GND pin.

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

zener resistance which i take out have no reading, hency meter showing 1, one probe on 4.4 ohm resistor i.e near to ic side leg & other probe on pin 24 reluts 0.7, on 23 pin results 3.2, if one probe on 4.4 ohm resistor down side leg & other probe on pin 24 reluts 4.3, on 23 pin results 6.7
so i can go & check with plugin tv & power on to test pin 24,
waiting for your reply,
Thanks.

[budm]

Re: KDL-60W600B won't open just Red Blinks 6 times

zener resistance which i take out have no reading, hency meter showing 1, one probe on 4.4 ohm resistor i.e near to ic side leg & other probe on pin 24 reluts 0.7, on 23 pin results 3.2, if one probe on 4.4 ohm resistor down side leg & other probe on pin 24 reluts 4.3, on 23 pin results 6.7
so i can go & check with plugin tv & power on to test pin 24,
waiting for your reply,
Thanks.

6.7 Ohms between pin 24 and pin 23? That is not good.
You need to remove the cap next, the one you marked with yellow box, once the cap is remove then you will check the resistance between pin 24 and 23 again, if it still shows <1 Ohm then you have bad IC.

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

no i think here you not understand me,
Meter set on 200 ohms rang one probe on 23 pin & other on 24 pin results 3.5
Meter set on 200 ohms rang one probe on 24 pin & other on resistor which i just solder, up side leg reluts 0.7,
Meter set on 200 ohms rang one probe on 23 pin & other on resistor which i just solder, up side leg reluts 3.2,
if one probe on 4.4 ohm resistor down side leg & other probe on pin 24 reluts 4.3, on 23 pin results 6.7
hope you understand, or still you think IC is bad?

[budm]

Re: KDL-60W600B won't open just Red Blinks 6 times

"Meter set on 200 ohms rang one probe on 23 pin & other on 24 pin results 3.5" This is the one that I am concerned about, it is the resistance between pin 24 and pin 23.
Since the capacitor is also connected between pin 24 and pin 23, so to be sure it is not the cap problem then you must remove the cap and then measure between pin 24 and pin 23 again after the cap is removed. All I care right now is the resistance between pin 24 and pin 23.

[Ali101]

Re: KDL-60W600B won't open just Red Blinks 6 times

i got it, i'll remove above picture yellow mark cap & than again check Meter set on 200 ohms rang one probe on 23 pin & other on 24 pin results,
Thanks for more clear.

[budm]

Re: KDL-60W600B won't open just Red Blinks 6 times

i got it, i'll remove above picture yellow mark cap & than again check Meter set on 200 ohms rang one probe on 23 pin & other on 24 pin results,
Thanks for more clear.

That is correct, I hope it is bad cap and not the IC. The IC is cheap and I hope you will have the tool to remove and install and new IC if it is bad.