Hello everyone,
I have an ASUS Vivobook 14 OLED M3401QA which is not posting. Currently when plugged into power/turned on the power indicator will illuminate and the battery indicator will flash white roughly once every 3 seconds. Leading up to this it would sometimes turn on and then other times not turn on, furthermore it also showed a screen saying "new cpu installed, fTPM/PSP NV corrupted or fTPM/PSP NV structure changed" and then a screen telling me to recover the bios however it is no longer even posting at this stage.
The diagnostics steps I have attempted...
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Hi, I am repairing a Microsoft Surface Pro 5. I did some troubleshooting and found that resistor [B]PR5575 [/B]feels hot. This resistor bridges [B]+3P3VAS_REG[/B] to [B]+3P3VAS[/B].
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by zdwenaGood day,
I have a motherboard from a Lenovo legion 5 laptop. The previous service was unable to repair it. So I started the repair myself. The motherboard wouldn't turn on at all. The problem was in the mosfet in the PU101 which starts the power supply and in the PQ8203. And in the burnt Lenovo IT8227E chip and also in a short circuit in the power supply. I fixed and replaced everything. I have the same parts board. Now the board turns on and the battery is charging, the power button lights up green. But I am not getting the image. And the board turns itself off in approx. 25-30...Today, 04:49 AM -
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Hi, I am repairing a Microsoft Surface Pro 5. I did some troubleshooting and found that resistor [B]PR5575 [/B]feels hot. This resistor bridges [B]+3P3VAS_REG[/B] to [B]+3P3VAS[/B].
[URL=filedata/fetch?filedataid=338535][ATTACH=JSON]{"data-align":"none","data-size":"medium","title":"image.png","data-attachmentid":3278885}[/ATTACH][/URL]
I then searched for the component that draws all the current from +3P3VAS and found the problem lies with the SAM/Super IO component [B][I]U3600 [/I][/B]([B]M22J9VDC[/B]/Kinetis...Today, 07:08 AM -
by sam_sam_samThis is something that I recently just bought the other day when the sale started for a LED lighting project that I plan on doing
I just bought another one today to make make two lighting panel fixtures
I thought I would share it just in case someone else happened to be interested in buying one and you are limited only one per order
[url]https://theelectronicgoldmine.com/products/g27501[/url]https://This is something that I rec... today to makeToday, 06:59 AM -
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I am repairing the A2780 (M2Pro 16").
There is no schematics and board view of A2708 yet, so I am referring 820-02100 (A2485).
Stuck 5.2V, 0.02A
'PP3V8_AON' short on diode mode and no voltage.
'PP3V8_AON_MPMU' short on diode mode.
'PPBUS_AON' looks fine. 12.3V
'PPVIN_P3V8AON' looks fine(not short on diode mode), 12.3V
I tried to remove the U5700, Q5800, Q5820, Q5840 and PP3V8 aond still stuck.
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Even if I check with thermal...Today, 06:50 AM -
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