Re: Samsung TV UN60J6200AF No Display + No LED
Thank you for the help.
I'll try to check for any obvious anomalies on my IC....
Bigfoot
Member
Last Activity: 06-21-2023, 08:53 AM
Joined: 03-27-2023
Location: Florida
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Re: Samsung TV UN60J6200AF No Display + No LED
Thank you for your suggestion.
I had already checked the transistor and diode, neither is shorted both seem good....Leave a comment:
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Re: Samsung TV UN60J6200AF No Display + No LED
I found the IC on eBay, but I can't find any data sheet on it...Leave a comment:
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Re: Samsung TV UN60J6200AF No Display + No LED
Thanks for your reply.
I have 419V between D- and D+, when the LEDs are connected.
The voltage is high, is there anyway to check if the IC driver is the problem?Leave a comment:
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Samsung TV UN60J6200AF No Display + No LED
Hi guys
I'm working on similar Samsung TV UN60J6200AF.
When I plug in power cord, the red light lights up, and flashes, then turns off.
I measured on the power supply board, and even without pressing the power on zbutton in getting on CNM803 (which goes from Power supply to Main board):
UD = 2.3V
PMW_BLU4 = 3.3V
PS_ON = 4.4V
A13V = 12.75V
I looked at the manual and all the voltages are correct.
When I unplug the main board from the power supply, LED lights are supposed to come on. However, non do come on.
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Re: Samsung TV - no backlight, except when mainboard disconnected
Thank you, I will check LEDs today.
Correct D- is not grounded. Non of lines on the connector are grounded, which I thought was very strange.
But why do you think i immediately have fully operational voltage even when on standby mode? Bad main board perhaps?Leave a comment:
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Re: Samsung TV - no backlight, except when mainboard disconnected
Hi guys
I'm working on similar Samsung TV UN60J6200AF.
When I plug in power cord, the red light lights up.
I measured on the power supply board, and even without pressing the power on button in getting on CNM803 (which goes from Power supply to Main board):
UD = 2.3V
PMW_BLU4 = 3.3V
PS_ON = 4.4V
A13V = 12.75V
I looked at the manual and all the voltages are correct.
When I unplug the main board from the power supply, LED lights are supposed...Leave a comment:
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Help identifying a component IC
Hello!
I'm trying on a new project.
And I can't identify the following chip. Tried googling it with no luck.
Would you know which IC this is?
Your help is much appreciated!... -
XW9300 Front Fan isn’t getting power
Hi there
I'm new here. I'm trying to build up XW9300 server for gaming.
Was wondering if anyone could help track down a missing 12VDC to an internal fan. The server has 2 fans. My other fan is working fine, and gets 12V. I've moved the non working fan to the other port- and it spins up ok. Meaning 12VDC isn't reaching my fan.
Here is a picture of the area:
Oh and.. I did soldering rework + hot air the area. Installed and flashed new BIOS. Fan was working before I did this. My new bios works good, just no fan power.
Here is a picture... -
XW9300 Schematics SP# 409665 -001 AS# 374254 -002
Hello everyone,
I'm working on a XW9300 that I'd like to turn into a gaming machine.
Seems like my front fan isn't working. It isn't getting 12 VDC to spin up.
Was wondering if anyone had schematics for this motherboard:
SP# 409665 -001
AS# 374254 -002
It comes out of XW9300.
Any help would be appreciated.
Thank you, and have a great day. -
Re: Are some components spot-welded to the MBs?
Hi guys
Read all the posts diligently, I have a similar issue to OP.
I'm trying to de-solder 32 pin PLCC BIOS chip from XW9300 workstation.
Trying to clone it. And then re-insert another 32 PLCC chip.
I'm using the Quick 861DW station. Granted I haven't had much experience with it. But I have it on 370 Celsius around 90 airflow. I spent about 1:30 minutes on chip. I see smoke coming off the board (probably some silicon/plastic burning off), but chip won't come off. I'm using CHIP QUICK NC191 Flux. It's...Leave a comment:
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Re: New Members - please post your introductions here
Hello
I’m just starting out as a hobbyist on SMD repairs.
Pulled up some old workstations I’ve had for 20 years.. 2 of them didn’t work.
Then made them both work with some tricks and walla I’m hooked on micro soldering!Leave a comment:
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