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enito replied to KDL-40BX450 Not power

in Troubleshooting TVs and Video Sources

09-03-2014, 11:37 PM
Re: KDL-40BX450 Not power

Hi, ok i didnt apply power, but i measured with capmeter the capacitor and is good. Now i see some tutorial about make a bridge of pin 1 (on off) and pin standby for see if backlight start, like samsung psu. What do you think?
[url]https://www.youtube.com/watch?v=n54IurMvr6o[/url]

greets

edit: forget my idea, if forget about dont get 3v :/ can make it this test, wtihout 3v standby working Re: KDL-40BX450 Not power<br /> <br...ood. Now i see

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Last edited by enito; 09-03-2014, 11:38 PM.
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enito replied to KDL-40BX450 Not power

in Troubleshooting TVs and Video Sources

09-02-2014, 10:55 PM
Re: KDL-40BX450 Not power

Oki,

Fusible resistor 10ohms i get correct
D6201 i get one read from one direction like diodes, but the other side i get upper read and down to 1 (is like charge and discharge). This diode is blue, no white black diode.
Now DC check in cap6530 how i measure this? need to up the board, no dangerous? cause need to take points under the board. Sorry for ask but wanna take all security

Thx!...

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enito replied to KDL-40BX450 Not power

in Troubleshooting TVs and Video Sources

09-02-2014, 07:26 PM
Re: KDL-40BX450 Not power

Thx for the link for read, now i checked again 3V standby pin 1, and i dont get any read. Multimeter set DC 20V , and no read.. what can be the next step for check in PSU? thx!

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enito replied to KDL-40BX450 Not power

in Troubleshooting TVs and Video Sources

09-02-2014, 02:50 PM
Re: KDL-40BX450 Not power

Now i understand, ok, today i re check this voltage with power supply and multimeter 3v. disconnect the mainboard, i notify news..thx!...

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enito replied to LN40C530F1R died (shortcut home)

in Troubleshooting TVs and Video Sources

09-02-2014, 02:28 PM
Re: LN40C530F1R died (shortcut home)

What about reset eeprom? can fix this? from manual exist a combination of remote control for do factory default.
I read about eeprom reset with join of pins,
[url]http://wiki.samygo.tv/index.php5/UnBricking_TV_by_EEPROM_Reset[/url]

GreetsRe: LN40C530F1R died (shortcut home)...OM_Reset[/url]

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enito replied to KDL-40BX450 Not power

in Troubleshooting TVs and Video Sources

09-02-2014, 02:27 PM
Re: KDL-40BX450 Not power

Yesterday i tryed this without main board and i dont get voltages, but.. i tryed with the press of power of tv, no power from control. I can try today with control power cause the power of tv, no reaction....

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enito replied to KDL-40BX450 Not power

in Troubleshooting TVs and Video Sources

09-02-2014, 02:17 PM
Re: KDL-40BX450 Not power

Really? can be a good new, try to buy mainboard, can be the solution...hope!

thx...

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enito replied to KDL-40BX450 Not power

in Troubleshooting TVs and Video Sources

09-02-2014, 02:17 PM
Re: KDL-40BX450 Not power

I see , and where is the area? and i thinked, what about eeprom fault (if this one have). I read in samsung can make some bridge in pins for reset, or apply with some codes factory restore. Not sure if this one can work, but i dont have codes for factory restore.

thx again...

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enito replied to LN40C530F1R died (shortcut home)

in Troubleshooting TVs and Video Sources

09-01-2014, 11:06 PM
Re: LN40C530F1R died (shortcut home)

I found service manual, can help,

[url]http://www.filedropper.com/ceb416x118729[/url]Re: LN40C530F1R died (shortcut home)...6x118729[/url]

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enito replied to KDL-40BX450 Not power

in Troubleshooting TVs and Video Sources

09-01-2014, 11:01 PM
Re: KDL-40BX450 Not power

Sure, now i check voltages and dont get good read, like pin 1 0.3v , is like power button not working, cause no power led nothing...

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enito replied to LN40C530F1R died (shortcut home)

in Troubleshooting TVs and Video Sources

09-01-2014, 10:31 PM
Re: LN40C530F1R died (shortcut home)

Hi i see , blow fused and stuff from power supply? cause if backlight is working, PSU is 100% OK? now the main board of this model can be found for replace?

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enito replied to KDL-40BX450 Not power

in Troubleshooting TVs and Video Sources

09-01-2014, 10:21 PM
Re: KDL-40BX450 Not power

Sorry about this , i opened a thread about the samsung

[url]https://www.badcaps.net/forum/showthread.php?p=479587#post479587[/url] (backlight worked)

Now i check voltages of SONY one and i tell you about discover.

Thx!!Re: KDL-40BX450 Not power<br /> <br.../> <br /> Thx!

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enito started a topic LN40C530F1R died (shortcut home)

in Troubleshooting TVs and Video Sources

09-01-2014, 10:20 PM
LN40C530F1R died (shortcut home)

Hi,
I have in my a big shorcut in home, 2 LCD died. 220V here. Now reading info about this thread i opened

[url]https://www.badcaps.net/forum/showthread.php?t=40056[/url]
"
I looks like the P/N on the board is BN44-00340A? If it is, it is SAMSUNG power supply board. See SCH of 340B.
[url]http://www.shopjimmy.com/samsung-bn4...upply-unit.htm[/url]
Can you please verify?
340B is compatible with 340A so the pin out of the connectors are the same.
The board has pull-up resistor for the POWER ON/OFF (PS_ON) and the BL_ON so you can...

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enito replied to KDL-40BX450 Not power

in Troubleshooting TVs and Video Sources

09-01-2014, 09:48 PM
Re: KDL-40BX450 Not power

Ok read, now if i disconnect psu CN802 connect, how i can see if backlight is powered? cause the main board is going to be disconnect for send current to powerlight..sorry for no understand fine this point...thx!

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enito replied to KDL-40BX450 Not power

in Troubleshooting TVs and Video Sources

09-01-2014, 09:40 PM
Re: KDL-40BX450 Not power

Here i upload the Sony one (same fault, not power on)

[url]http://postimg.org/gallery/2htm8sej8/4315628e/[/url]

thx again for your time!Re: KDL-40BX450 Not power<br /> <br...for your time!Re: KDL-40BX450 Not power

Here i upload the Sony one (same fault, not power on)

[url]http://postimg.org/gallery/2htm8sej8/4315628e/[/url]

thx again for your

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enito replied to KDL-40BX450 Not power

in Troubleshooting TVs and Video Sources

09-01-2014, 09:30 PM
Re: KDL-40BX450 Not power

Chile, 220V

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enito replied to KDL-40BX450 Not power

in Troubleshooting TVs and Video Sources

09-01-2014, 09:29 PM
Re: KDL-40BX450 Not power

Hi, true, i show you the other one lcd damaged , samsung. Sorry..but this can help too let read your info.

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enito replied to KDL-40BX450 Not power

in Troubleshooting TVs and Video Sources

09-01-2014, 08:37 PM
Re: KDL-40BX450 Not power

Hi, yes i see some replacement set, but wanna be sure if the psu was damaged or other thing. Here i attach photos of boards, i lifted resistor of psu for test. Thx for read

[url=http://postimg.org/image/whzzgzsnz/][/url]

[url=http://postimg.org/image/72wv6hp7j/][/url]

[url=http://postimg.org/image/u5rzjeg2n/][/url]

[url=http://postimg.org/image/qaolgtwwv/][/url]

[url=http://postimg.org/image/oy6wexzhb/][/url]

[url=http://postimg.org/image/yk0gv8qn3/][/url]

[url=http://postimg.org/image/hgxozq9y7/][/url]

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Last edited by enito; 09-01-2014, 08:39 PM.
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enito replied to KDL-40BX450 Not power

in Troubleshooting TVs and Video Sources

09-01-2014, 03:54 PM
Re: KDL-40BX450 Not power

Btw, how i can check if maniboard is not damaged? i see and no burned or something.. how i can check if main is sending signal?

photos coming...

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enito replied to KDL-40BX450 Not power

in Troubleshooting TVs and Video Sources

09-01-2014, 03:33 PM
Re: KDL-40BX450 Not power

Hi thx for reply, no bliking , nothing react.

Late i take some photos of board, area voltages for guide me what measure i need to check. thx !!

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LN40C530F1R died (shortcut home)

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