Hello,
We have this set here in our shop that is not ginving sign of life besides red light that is blinking one time after pressing the button and nothing more... After detaching the mainboard from the PSU (this set has separate board thank god?! or not...) the backlight comes on. After reattaching nothing besides red light.... Can anyone from the forum help me here? Thank you in advance. Here's a link with images of the mainboard and the memory IC's that are on it.
Regards, Norbert!...
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by norbiszokeToday, 06:54 AM
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Hi, I need help to identify the component with marking "9003 KAUCHB".
A bit of background...
I have an induction hotplate UNOLD Elegance Typ no. 58105 (with board CHK-A1.42S) which has a blown resistor.
I have also located the problem in the SOT23-6 component with the marking "9003 KAUCHB"; the pin 5 was disconnected from the IGBT emitter (ground) due to the high temperature and this caused the IGBT to be permanently ON.
I replaced the resistor and resoldered pin 5 of the SOT23-6 component to the IGBT, the hotplate worked for about a month and...1 PhotoToday, 12:55 PM -
by AdrenalinTLHi,
Very new to this. So pretty basic / silly question. Can this be the cause of a totally dead mobo? And, is it repairable if I bridge tracks etc?
Thanks1 PhotoToday, 11:36 AM -
Reply to Help lenovo thinkcentre m720s biosby spdt7Hello.
I'm missing something?
I already flashed the original bios (CH341a black usb adapter).
Problem persist. I cant find the serial, since the original owner removed the sticker from the case.
Think this is the original bios backup. I got it using ch341 adapter....-
Channel: BIOS & Schematic Requests!
Today, 12:41 PM -
-
by DoOm86TV philips 55'' no backlight (image ok).
I tested the backlight with my led tester from the unplugged connector cable and it lights up. I had voltages at the motherboard connector, but anyway I order a new psu. Same problem, same voltages. Disassembled the TV and checked every strip with my led tester, they all light up, same voltage for every pair of strip (they go two by two).
What am I missing?
And something else I don't understand. I checked and I have 3v Leds, 10 per strips. Why every pair of strip (so 20 Led) take about 32v when powered up with my led tester 🤔2 PhotosYesterday, 03:47 PM -
by StormCrowHi folks
Got a 14-eb0013na here that won't boot - have attached original BIOS dump
Serial number: 5CD203HPS8
I wonder if anyone could sort this for me so I can re-flash?
Also interesting in learning how to do it myself, is it the ME region that needs clearing on the HP laptops?
Many thanks...-
Channel: BIOS Requests ONLY!
Today, 07:48 AM -
-
by Super360Hi as you can see from title, I have a samsung tv here that will show the smart tv logo and then no picture after that even hitting input or menu on remote and shows nothing but the backlight still appears to be on. The tv will turn itself off after a minute or so automatically. I'm somewhat confused if this is either a eeprom problem or a bad led strip problem. The power supply makes a pretty noticeable humming sound when it's turned on leading me to believe one of the leds are shorted but idk honestly. Any of you guys have any help for me? I have a good multi meter and can take pictures of whatever...4 Photos04-13-2024, 10:05 PM
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by elsomerHi, im looking for the bios dump of a dell vostro 5620, the motherboard model is ODIN 16V UMA 213097-1 , this is the original dump but it does not show video, thanks...
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Channel: BIOS Requests ONLY!
Today, 12:02 PM -
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by gigasiHello, I need the bios of the HP pavillio gaming 15-ec1035la dag3hcmb8e0 rev e.
It turns on but does not give a video signal. I leave the old bios attached. thank you so much.​...-
Channel: BIOS Requests ONLY!
04-03-2024, 09:34 AM -
-
by vinzmthi to all
i have this logic board with no back light, image is present.
unknow istory.
on q7707 pin 5 EDP_BKLT_EN found 3.3 v, pin 1 gnd damage, pin 2 BKLT_PLT_RST_L only 0.08v (but is 3.3 on r2088 pin 2)
remove q7707 and find this
any suggestions?
thanks...1 PhotoToday, 07:05 AM
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by norbiszokeHello,
We have this set here in our shop that is not ginving sign of life besides red light that is blinking one time after pressing the button and nothing more... After detaching the mainboard from the PSU (this set has separate board thank god?! or not...) the backlight comes on. After reattaching nothing besides red light.... Can anyone from the forum help me here? Thank you in advance. Here's a link with images of the mainboard and the memory IC's that are on it.
Regards, Norbert!...Today, 06:54 AM -
by vinzmthi to all
i have this logic board with no back light, image is present.
unknow istory.
on q7707 pin 5 EDP_BKLT_EN found 3.3 v, pin 1 gnd damage, pin 2 BKLT_PLT_RST_L only 0.08v (but is 3.3 on r2088 pin 2)
remove q7707 and find this
any suggestions?
thanks...1 PhotoToday, 07:05 AM -
by AdrenalinTLHi,
Very new to this. So pretty basic / silly question. Can this be the cause of a totally dead mobo? And, is it repairable if I bridge tracks etc?
Thanks1 PhotoToday, 11:36 AM -
by fredyjbiplease help friends x1 yoga 7th no display beep melody thank you...
-
Channel: BIOS Requests ONLY!
Today, 03:14 AM -
-
by chth96Hello.
I have 29inch LG CRT TV,And Yesterday,Whenever I connect AC power cord to power outlet without switch on, I heard a sound like white noise, And When I switched on this CRT TV, It sometime displayed correctly But usually It won't last more than 20 minute and The screen begin to dark and It finally did not display at all for hours..
Today,I dismantled its plastic case and discharged the biggest capacitor(400wv 470uf) which still holds 250 voltage,and I finally detached PCB from cathode-ray tube.
I measured ESR value of most of caps in PCB with MESR-100 and I found that KME(25v...-
Channel: General Capacitor Questions & Issues
Today, 07:11 AM -
-
by trepachkaSee attached image. It says "X322" on it. This is a follow-up to my previous posted topic. The issue is upon lid closing, the screen turns off. When lid is opened, the screen remains dark.
This component is positioned right on the edge of the motherboard and has like a cradle made inside the case. I am assuming this component is used as a lid close sensor.
Please, help me identify it. Thank you....Yesterday, 03:26 PM -
Reply to Help lenovo thinkcentre m720s biosby spdt7Hello.
I'm missing something?
I already flashed the original bios (CH341a black usb adapter).
Problem persist. I cant find the serial, since the original owner removed the sticker from the case.
Think this is the original bios backup. I got it using ch341 adapter....-
Channel: BIOS & Schematic Requests!
Today, 12:41 PM -
-
by elsomerHi, im looking for the bios dump of a dell vostro 5620, the motherboard model is ODIN 16V UMA 213097-1 , this is the original dump but it does not show video, thanks...
-
Channel: BIOS Requests ONLY!
Today, 12:02 PM -
-
by StormCrowHi folks
Got a 14-eb0013na here that won't boot - have attached original BIOS dump
Serial number: 5CD203HPS8
I wonder if anyone could sort this for me so I can re-flash?
Also interesting in learning how to do it myself, is it the ME region that needs clearing on the HP laptops?
Many thanks...-
Channel: BIOS Requests ONLY!
Today, 07:48 AM -
-
by Carl0s-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...04-15-2024, 12:51 PM