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... -
Good day Experts
I have a lenovo Legion pro 5 16ACH6H with AMD RYZEN 7 5800H and RTX3070,.
A weird issue has troubled me. If i power on off the laptop 20 times then only power LED will lit but no fan spin no display. At this stage gpu, vram. DDR voltage. 5v 3.3v 1.8v and the rest are present and cpu core is stuck at 0.84v.
And sometimes lets say the 21st time it will boot perfectly and there is image and everything is working perfectly and at this stage i see cpu core...08-24-2025, 12:31 PM -
Have a acer laptop ex215-22 with motherboard part no daz8emb18a0 the issue is the battery gets drain overnight upto 25-30 percent even when switched off / shutdown.even after ssd is removed and laptop off with button the battery keeps draining.i have updated the bios but same issue have tried another new battery and the charging works fine only issue is battery is discharging when connected to motherboard in off condition.
Help me to diagnose this issue as there is no shortage in the inputs MOSFET
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