*Mind blown*
Actually you are right, thank you!...
unimatrix93
Badcaps Veteran
Last Activity: 06-04-2025, 01:07 AM
Joined: 10-27-2021
Location: Orbottyan
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Gigabyte B450I AORUS PRO WIFI BIOS flash
Hello everyone,
I bought a used ITX motherboard with a no display/POST and spinning fans. Original owner tried to update the BIOS and since then it's doing this. So something went wrong with BIOS update I assume.
I have a CH341a programmer and I did repair motherboards with it before.
Now I got the BIOS file from Gigabyte's site, but it's in a archive (F66g) or something and I don't know how to extract the bin from it.
How should I proceed with it?
Thank you! -
Thank you very much, I will proceed to do that.
...
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Jeep Drive-train control module repair
Dear forum,
My father's Jeep has this annoying rattling sound which is caused by the Drive train module as it constantly moving a solenoid.
It comes and goes as the temperature changes. For example, when you cold start the vehicle from a long parking time, it starts loudly (especially on winter) then it goes silent as the vehicle's temperature rises.
So I took the DTCM apart and found this damaged ceramic cap, which I should replace:
[URL=filedata/fetch?filedataid=386713][ATTACH=JSON]{"data-align":"none","data-size":"medium","title":"2025-06-02-10-54-05-477.jpg","data-attachmentid":3651009}[/ATTACH][/URL]... -
However I cannot measure any resistance on it, my DMM measure open circuit on it.
I will check the surrounding circuitry on the main board, just in case....Leave a comment:
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Egg incubator humidity sensor replacement
Hello everyone,
My egg incubator humidity sensor kicked the bucket, I read open circuit on it with DMM even in the MOhm range.
So I started identifying this piece of crap and look for a replacement part.
[URL=filedata/fetch?filedataid=384349][ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3637781}[/ATTACH][/URL] [ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3637783}[/ATTACH]
This thing has 6 turns... -
I'm did not fix up the board yet, the new board works perfectly in the TV.
The issue with my previous board is the IC and the burned resistor next to it....Leave a comment:
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I ordered a new mainboard for a decent price and it is working perfectly. I also ordered the IC which Iotas recommended to fix up my faulty board....Leave a comment:
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I found [URL="https://www.ti.com/lit/ds/symlink/tlv9062.pdf?ts=1728476487361&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FTLV9062"]this one[/URL] based on the TLV9062 at my local distributor.
[ATTACH]n3612922[/ATTACH]I found [URL="https://www.ti.com/lit/ds/symlink/tlv9062.pdf?ts=1728476487361&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FTLV9062"]this one[/URL] based on the TLV9062 at my local distributor.
[ATTACH]n3612922[/ATTACH]I found [URL="https://www.ti.com/lit/ds/symlink/tlv9062.pdf?ts=1728476487361&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FTLV9062"]this...Leave a comment:
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Is any of these are sufficient replacement?
[url]https://eu.mouser.com/c/semiconductors/amplifier-ics/operational-amplifiers-op-amps/?gbp%20-%20gain%20bandwidth%20product=10%20MHz&number%20of%20channels=2%20Channel&package%20%2F%20case=SOIC-8&supply%20voltage%20-%20max=5.5%20V&supply%20voltage%20-%20min=2.4%20V[/url]https://Is any of these are sufficie...ckage%20%2F%20...Leave a comment:
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Yes it is....Leave a comment:
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[ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3612830}[/ATTACH]
I hope this clear enough....Leave a comment:
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R170, the one missing between the cap and the resistor.
I can measure 140kohm on it, but since it let out magick smoke, the resistance of it might changed.
I couldn't find the exact IC on any supplier sadly, maybe using something else with similar attributes could work?...Leave a comment:
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[ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3612722}[/ATTACH]
As far as I can see, it's part of the backlight. I desoldered the IC to measure it's pins outside of the circuit and indeed the GND leg has 56ohm resistance to all other leg on it....Leave a comment:
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I found the [URL="https://www.lcsc.com/datasheet/lcsc_datasheet_2411121111_DIOO-DIO2072SO8_C444544.pdf"]schematic[/URL] of the IC.
Also turned out that the burned component is a resistor. I removed it from the circuit and I measure low resistance (53ohm) to ground on all of the non-GND pins of the IC.
Could this be the issue?I found the [URL="https://www.lcsc.com/datasheet/lcsc_datasheet_2411121111_DIOO-DIO2072SO8_C444544.pdf"]schematic[/URL] of the IC.
Also turned out that the burned component is a resistor. I removed it from the circuit andLeave a comment:
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Yes, you are right, I measure 170-200V on the discharge pins while the backlight is trying to stabilise.
Also I found something suspicious:
[ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3612173}[/ATTACH]
This small ceramic cap is next to the IC marked DI02072 which is right next to the backlight connector.Yes, you are right, I measure 170-200V on the discharge pins while the backlight is trying to stabilise.
Also I found something suspicious:
[ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3612173}[/ATTACH]...Leave a comment:
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I proceed to check the capacity (I don't have an ESR meter at hand sadly).
With the jumper on and the panel disconnected, the backlight stayed on for a long 2 minutes, at high brigthness. The tv responded to my remote commands, bleeping with menu sounds, then it went into restarting again. The difference is that the backlight had much higher brightness and it the tv were stable for 2 minutes instead of a few seconds.
Also, no short on the signal lines you mentioned....Last edited by unimatrix93; 04-10-2025, 08:55 AM.Leave a comment:
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393V on both standby and operating mode.
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CX8015 - 0v
CX8025 -0V
CP8015 275V
CM816 - 10.43V
CM813 - 20V
CM862 - 218V
CM853 - 12V
C9105 - 13V
C9101C - 197V393V on both standby and operating mode.
[ATTACH=JSON]{"data-align":"none","data-size":"large","data-attachmentid":3612133}[/ATTACH]
CX8015 - 0v
CX8025 -0V
CP8015...Last edited by unimatrix93; 04-10-2025, 08:42 AM. Reason: Added more measurements and photo of boardLeave a comment:
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I did some measurements based on the photo you made.
I also made the jumper where you showed.
Since my board looks different, I don't know where is the middle capacitor is on my board.
[ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3612022}[/ATTACH]...Leave a comment:
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Ah so this is the power supply of the SoC. Now it makes sense.
Any idea what could cause this issue?
I measuring fluctuating voltages on the backlight.
The board specifies 112V for 55' model like mine, but I measure 123V on it while its working and when it flashes and shuts down, I measure 80V then it quickly climbs up to 150V, then goes back to 123V while working again for a couple of seconds....Leave a comment:
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