I have checked the output with oscilloscope and found that there is a slight random voltage fluctuation.
Is it possible to get the datasheet of LC6685 IC?
Also highly appreciate if you could let me know what could go wrong....
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-
I have 50 Chinese constant current isolated LED drivers based on LC6685 IC. 35 drivers are working fine, but there is a slight flickering in the rest of the drivers.
I have checked the output with oscilloscope and found that there is a slight random voltage fluctuation.
Is it possible to get the datasheet of LC6685 IC?
Also highly appreciate if you could let me know what could go wrong....Today, 02:46 AM -
Hello
working on a2141 macbook, board number 820-01700 which has no wifi\bt and also no connection with LAN cable.
initial visual inspection the board looks good no visible corrosion or damage.
i found that PP3V3_G3S_X is shorted to ground (around 1.5ohm short)
and also PP3V3_GS3_WLAN i shorted to ground (same ohm reading, around 1.5ohm).
the board is working but no WIFI\BT as i mentioned.
with the usb c cable connected for measurement i noticed U8215 i getting EXTREMELY HOT
so i pulled it out figuring it might be causing the...Yesterday, 01:18 PM -
Hi!
Model: Lenovo L14 gen 2
CPU: SRK04 i5-1135G7
Board: HL4A0/HL5A0 Rev. 1.0
Laptop no boot, no react on power button. Power supply switch on 20V but consume only 0,11A. Electric i cannot found problem.
Probably problem with bios
Original bios in att.
Please help!...Yesterday, 12:59 PM -
hi,
someone have bios for lenovo m80q tiny 11DQ?
please help
Today, 03:21 AM -
Hi all, I' m a newbie in troubleshooting but I'd like to solve a quarter fan spin issue on a 820-5509-A board. Where should I start to solve this problem? Any suggestion is useful! Thank you!Today, 03:20 AM
-
Hi
Need ec dump for Asus U31JG rev 2.0 or U31F rev 2.0, ThanksYesterday, 05:22 AM -
Hi,
Sooo - our IT got a pile of old iPads that the sales guys have been mistreating. These are free for grabs if you want to try to get one working. Thought I'd give it a try - if I get at least some life to I can give to my kid to entertain during a car rides.
But the iPad it self - its a 5th gen cellular model. When I initially plug it in it was completely dead. It was not recognized by my Mac nor it started to charge. Disassembled it opened up the battery connector and checked the battery voltage. My multimeter showed 0,7v. Had a spare micro-usb charging board lying...Yesterday, 12:51 PM -
-
Hi,
I'm looking for ideas on how to aproach this, I spent many ours already.
The dryer doesn't get hot, only warm and then gives error E25 (Fault with the sensor or electronics detected).
Now I'm testing it using the service mode - it gets the temperature of the heat pump liquid to 52C and then it stops the heat pump. After few minutes it then produces E25.
I tried to understand if it stops the testing because the final temperature was reached and I don't think that's true. While it was running, I heated that sensor using hot air to 80C and then it stopped. So I think the...04-12-2024, 06:24 AM -
Hi guys, I have this 2011 iMac A1311 with a strange problem.
Most of the time, when I plug in the power cord, the first of the 4 LED's turn on, but when I press the power switch the LED turns off and iMac won't boot up.
Sometimes, when I unplug and plug the power cord back in, iMac starts up correctly by turning on the 4 LEDs in sequence.
I have already tried a new power supply, but the result does not change. Do you have any suggestions?
Motherboard 820-3126-A04-06-2024, 05:19 AM
-
hi,
someone have bios for lenovo m80q tiny 11DQ?
please help
Today, 03:21 AM -
I have 50 Chinese constant current isolated LED drivers based on LC6685 IC. 35 drivers are working fine, but there is a slight flickering in the rest of the drivers.
I have checked the output with oscilloscope and found that there is a slight random voltage fluctuation.
Is it possible to get the datasheet of LC6685 IC?
Also highly appreciate if you could let me know what could go wrong....Today, 02:46 AM -
Hello friends.
I need bios on Thunderobot 911x (or Hasee s8d6) DANLXBMB8C0 REV: C NLXB
ThanksToday, 01:10 AM -
Got this massive TV and tested they backlights and they were out. Took it all apart and replaced them. Put it back together and boom they work! I then run it for many hours and all still working. I then needed to factory reset to pass on to next person and...
I factory reset and it shows Hisense logo fully lit up, then Google logo for a couple of seconds and forces shut off. Now that's all the TV does. Hisense, Google logo force shutoff. How is this possible.. anyone have some experience or advice for this. All I can think is somehow I got a software corruption which is ridiculous...Yesterday, 07:31 AM -
Hi all, I' m a newbie in troubleshooting but I'd like to solve a quarter fan spin issue on a 820-5509-A board. Where should I start to solve this problem? Any suggestion is useful! Thank you!Today, 03:20 AM
-
Hi,
Sooo - our IT got a pile of old iPads that the sales guys have been mistreating. These are free for grabs if you want to try to get one working. Thought I'd give it a try - if I get at least some life to I can give to my kid to entertain during a car rides.
But the iPad it self - its a 5th gen cellular model. When I initially plug it in it was completely dead. It was not recognized by my Mac nor it started to charge. Disassembled it opened up the battery connector and checked the battery voltage. My multimeter showed 0,7v. Had a spare micro-usb charging board lying...Yesterday, 12:51 PM -
Hello.
I have a LENOVO V15-ADA that it not turning on.
The motherboard that it has is GV451&GV551 NM-D151
When i connect the power it takes 550mA and it has black screen. The power button is on and it works fine.
I have make the basic mesurments on the mobo and i dont have any short circuit.
I have reprogramme the bios but nothing .
Any ideas?Today, 01:11 AM -
Hi everyone!
need [B]Surface Go 2 1901 Bios DAV81MB1AE0 REV E[/B]
dump . Thanks!Hi everyone!
need [B]Surface Go 2 1901 Bios DAV81MB1AE0 REV E[/B]
dump . Thanks!Hi everyone!
need [B]Surface Go 2 1901 Bios DAV81MB1AE0 REV E[/B]
dump . Thanks!Yesterday, 09:50 PM -
Hi Guys, I hope someone can assist me me. I have a HP Probook G2. It came in for not charging. When charger plugged in power light on the charge port was flickering as well as the caps lock light. Not a pattern, but inconsistent. I found a faulty mosfet on the power input which I replaced. Problem I have is that it does not start up without a battery unless I use a 18.5v charger. It does however start with the 19.5v with the battery installed, but the battery charge voltage is 2.58v. The required charger for this unit is a 19.5v of which I have tried several. The battery is bad and have ordered...04-14-2024, 07:37 AM
-
Hello
working on a2141 macbook, board number 820-01700 which has no wifi\bt and also no connection with LAN cable.
initial visual inspection the board looks good no visible corrosion or damage.
i found that PP3V3_G3S_X is shorted to ground (around 1.5ohm short)
and also PP3V3_GS3_WLAN i shorted to ground (same ohm reading, around 1.5ohm).
the board is working but no WIFI\BT as i mentioned.
with the usb c cable connected for measurement i noticed U8215 i getting EXTREMELY HOT
so i pulled it out figuring it might be causing the...Yesterday, 01:18 PM