Re: Samsung LN46B750 power issue
Here is a link to the video showing how the red light is blinking. [url]http://vimeo.com/81277582[/url]Re: Samsung LN46B750 power issue<br ...81277582[/url]
dbruts
Member
Last Activity: 12-17-2013, 09:39 PM
Joined: 11-07-2013
Location: Seattle, WA
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Re: Samsung LN46B750 power issue
Thank you for your time. I will upload a video and link it here. As well as any new progress. thank you again.Leave a comment:
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Re: Samsung LN46B750 power issue
I do hear a faint on and off high pitched sound coming from this part....Leave a comment:
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Re: Samsung LN46B750 power issue
Same blinking pattern. I am uploading a clip now. Should have a link in a few minutes....Leave a comment:
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Re: Samsung LN46B750 power issue
Testing like image.
1 (POW ON/OFF) .8
2 (H_Sync) 0
3 (STB 5.3V) 5.21
4 (GND) 0
5 (GND) 0
6 (GND) 0
7 (13Vs) 12.78
8 (13Vs) 12.78
9 (GND) 0
10 (GND) 0
11 (GND) 0
12 (GND) 0
13 (5.3V) 5.21
14 (5.3V) 5.21
15 (5.3V) 5.21
16 (5.3V) 5.21
17 (GND) 0
18 (GND) 0
19 (13Vm) 12.78
20 (GND) 0
21 (13Vm) 12.78
22 (13Vm) 12.78
23 (INV ON/OFF) 5.12
24 (NC) 0
25 (E-PWM) 4.68
26...Leave a comment:
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Re: Samsung LN46B750 power issue
Sorry I am a little confused. When I took the readings, I tested like the layout in the image. Is the other image a close up of the CN801 to be tested?...Last edited by dbruts; 12-07-2013, 12:20 AM.Leave a comment:
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Re: Samsung LN46B750 power issue
T-CON board images...Leave a comment:
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Re: Samsung LN46B750 power issue
Yes. It was the replacement with matching codes BN94-02585CLeave a comment:
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Re: Samsung LN46B750 power issue
I will have to reposition the tv in order to get at the T-CON board.Leave a comment:
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Re: Samsung LN46B750 power issue
P/N of power supply board is BN44-00266A...Leave a comment:
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Re: Samsung LN46B750 power issue
Close up of main board. I also returned the main board that I received and purchased a board that matches....Last edited by dbruts; 12-06-2013, 11:28 PM.Leave a comment:
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Re: Samsung LN46B750 power issue
When i remove the cable between the main board and the power supply, the backlight does turn on.
I have a main board with part #BN94-02585C. I ordered from partstore and was shipped a replacement piece that they said was a "substitute" part....Leave a comment:
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Re: Samsung LN46B750 power issue
If you need any other images let me know.
[url]http://imgur.com/8AhJHhQ[/url]
[url]http://imgur.com/mekoI5c[/url]
[url]http://imgur.com/8AhJHhQ[/url]
[url]http://imgur.com/qDtSXGg[/url]Re: Samsung LN46B750 power issue<br .../qDtSXGg[/url]Re:Leave a comment:
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Re: Samsung LN46B750 power issue
Should I be testing with the cable plugged in from the power supply to the main board?Leave a comment:
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Re: Samsung LN46B750 power issue
I am also using a Voltmeter set at 20 (DC line over three dots) for all tests.Leave a comment:
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Re: Samsung LN46B750 power issue
To test, i unplugged the cord from the power supply to the main board and tested the cable at the main board end. when the cord is unplugged, it appears there should be no power going to the main board which then connects to the T-CON board, speakers, and remote control receiver. Does the 0.06 reading mean there is a signal being sent, but because the main board does not send anything back, the main board is bad?
I am unsure what you mean by ground ref. point. I am testing with pin 3 which is the (STB 5.3V) pin. I purchased the...Leave a comment:
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Samsung LN46B750 power issue
There was a surge through the HDMI cable that fried the main assembly board resulting in a completely dead unit when plugged in. I ordered a replacement and installed. Now when powered, the standby light flashes quickly, but the screen does not turn on. When i unplug the power supply and the main board, the backlight turns on. I thought this might be a power issue so i also purchased power supply board. There are no bulging or cracked capacitors on either of the boards. After installing this, the standby light continues to flash very quickly. I have a voltmeter and feel comfortable testing. I... -
Re: SAMSUNG LCD 40" does not turn on
I am having a similar problem with my LCD Samsung TV. I had the exact same problem with my tv light blinking red extremely quickly except I can see white noise on the screen and can change the volume and channels up and down but cannot access any menus or use the touch pad control on the tv itself.Leave a comment:
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