hello, when i connect the 3.3v to 1.8v adapter the ALVC164245 chip on the adapter is getting extremely hot.
any one know something abou this issue ?
any one know something abou this issue ?
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Re: RT809F programmer issue
You mean chip on the 3.3 to 1.8V converter is heating?? If yes, its very likely ur converter adapter is shorted and or pin orientation is not correct. -
Re: RT809F programmer issue
Yes i mean that. the seller told me to try any way, i have checked pin orientation a few times and it was as intendedComment
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Re: RT809F programmer issue
Check chip position on it and the adapter position, the 1.8v adapter will be on the last 4 sockets while he 3.3v connector will be on the first 4 sockets of the connector.Comment
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Hi everyone,
I'm working on a MacBook Air 2020 (A2337, board 820-02016) and running into a strange USB-C issue. I've gone through quite a bit of testing and part replacement, but I'm stuck — hoping someone here can shed some light.
🛠 Original Issue
The machine initially wouldn't negotiate 20V over USB-C — stuck at 5V.
Diagnosis showed PP1V5_UPC0_LDO_CORE shorted to ground.
I replaced U3100 (UF400) using a donor board (A2179), and the machine powers on fine now.
⚠️ New Problem: One USB-C Port Only Works in One Orientation... -
Hi, sorry if i here to request if anyone know number of pin to set lines for reading ITE7751e on RT809F..i try to see on schematic but i dont know how to choose it..pleasee.. -
I have three identical-spec 820-01700 boards (2.6/32/512), and ALL THREE boards came to us with the same fault, from different sources: The boards don't wake from hibernation with the keyboard or lid, they ONLY wake when you press the power button. I understand this is a very minor issue, but the boards must be fixed!
We will of course begin with the obvious (checking lid signals), but I couldn't help but notice these three boards were all 32GB variants. Has anyone noticed an issue relating to these 32GB boards in particular? I of course don't think it's a RAM issue, but it's bizarre... -
HP Pavilion 15-CW1002UA
S/N 5CD0251CBC
P/N 7KE54EA
Hello guys!
I have a strange issue with my laptop keyboard and I'm lost trying to detect what's wrong - the KB9028Q-C or the keyboard itself.
It powers on OK and has no other issues except the following:- CAPS LOCK does not work at all
- Fn button toggles Flight Mode
- When I press 't' or '5', it produces 't5', and when I press 'y' or '6', it produces 'y6'
- (with SHIFT pressed: 't%' and 'y^' respectively)
but when I press and hold...06-27-2025, 01:10 AM -
Hello everyone,
I'm experiencing an issue with my Alienware 15 R2 (Service Tag: DL7NN32). The laptop works perfectly when connected to the AC adapter — it powers on and functions normally. However, the battery does not charge. If I disconnect the DC adapter, the laptop shuts down immediately, as the battery is at 0%. I have replaced the battery with a new compatible one, but the issue persists. I also replaced the AC adapter with a compatible one, but the battery still doesn't charge.
To assist with troubleshooting, I'm attaching two power circuit schematics:- Power
Comment