Re: HP 15-bw065 (LA-E831P) no EC_ON signal
I searched the internet for information on ADP_ID and found out that my opinion about it was wrong.
Resistance of ADP_ID relative to VDD (+19v) at 65w PSU = 383KOhm, voltage was 0.98v.
After restoring the correct operation of ADP_ID . [b]Laptop worked, problem solved.[/b]Re: HP 15-bw065 (LA-E831P) no EC_ON signal
I searched the internet for information on ADP_ID and found out that my opinion about it was wrong.
Resistance of ADP_ID relative to VDD (+19v) at 65w PSU = 383KOhm, voltage was 0.98v.
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Re: HP 15-bw065 (LA-E831P) no EC_ON signal
KB9022 was replaced by a new one (flashed).
When you connect the power supply on the KB9022 EC_ON pin appears voltage 3,3v and after 3 seconds drops to 0v.
KB9022 pin unsoldered and fed 3.3v to the bus EC_ON, duty voltages appeared....
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Re: HP 15-bw065 (LA-E831P) no EC_ON signal
When you connect the power supply on the KB9022 EC_ON pin appears voltage 3,3v and after 3 seconds drops to 0v.
KB9022 pin unsoldered and fed 3.3v to the bus EC_ON, duty voltages appeared.
KB9022 was replaced by a new one (flashed).
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Re: HP 15-bw065 (LA-E831P) no EC_ON signal
The +3VALW and +5VALW buses are normal, the load is more than 700 ohms. SPOK (PGOOD), +3VALW and +5VALW appear when EC_ON appears briefly on PU301....
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Re: HP 15-bw065 (LA-E831P) no EC_ON signal
There is EC_RSMRST# which should appear from 1.8v voltage after starting the PU301 (+3VALWP - +5VALW)....Last edited by Xruss; 07-09-2023, 10:23 AM.
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Re: HP 15-bw065 (LA-E831P) no EC_ON signal
+3VALW_EC - stable 3.3v
REGN (pin #16) - 6.07v
ACOK (pin #5) - 3.3v
ACDRV (pin #4) - 25v
CMSRC (pin #3) - 19v
ACP (pin # 2) - 19v
ACN (pin # 1) - 19v...
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HP 15-bw065 (LA-E831P) no EC_ON signal
[b]HP 15-bw065 (LA-E831P) malfunction: no EC_ON signal from the cartridge.[/b]
Trouble: the laptop did not turn on, there was no 19v at the output from the keys on the charger.
They replaced transistors PQB11 and PQB12 - 19v appeared.
But now KB9022 cartridge doesn't output EC_ON 3,3v when I pressed the power button on the notebook.
The power supply of the cartridge is normal.
On the legs: 9, 22, 33, 67, 96, 111, 125 - [b]3,3v[/b]
On pins: EC_ON, EC_KBRST#, PM_SLP_S3#, PM_SLP_S5#, PCH_PWROK, SPOK, SYSON, EC_RSMRST#, MAINPWON, SUSP#, VGATE - [b]0v....Last edited by Vesko356; 07-08-2023, 03:38 PM. Reason: Attached schematic removed and replaced with link.
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Re: New Members - please post your introductions here
Hi Folks, just joined but have years of experience fixing all types of electrical / electronics and software problems.. but you can never know it all and there's a lot of knowledgeable folk on here.. hope to be able to provide some help too if I can..
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