Thank you for all your help. I had two of those. Following your instruction, I was able to fix the second one, the issue was on the Wifi module, the chipset was getting hot. I remove it and now it boots.
I will try to place back the resistor one the first one tomorrow morning.
Have nice end of day and thanks again.
Thank you to the guys at HEGE supporting Badcaps [ HEGE ] [ HEGE DEX Chart ]
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resistor in red was getting hot. I removed it but short was still there. I removed the litle cap, not the big one. short is gone, I measue 0.25 when set to 20K. Device doesn't turn on, still 0V on VCC on that spirex chip PIN 16...
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Hello, thank you very much for your reply and your help.
You are right, VCC is shorted to ground. Should I try to inject 1V on SP3232E Pin 16 and look for heat component with thermal camera ?
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Hiopos - Cash Touch - Doesn't turn on
Hello,
I have this Hiopos Cash system running on android that stopped working without notice. The power supply is ok, there's light on motherboard but when pressing power button it doesn't turn on.
I've google for schematics but no luck. Motherboard is S2802_V1.3B. I've took some measure and maybe it could be a transistor, the one I am pointing on with the orange arrow on the pics. Does anyone knows this board ?
Thanks
Sam...
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Hello,
I have CH341, that was my first one. Then I had RevealProg, it's very good but fragile.... and now RT809F, this one is really really good and stil cheap.
I am happy to try again if you think there is a way.
Thanks...
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I've tried again. I've flash orginal ROM and the two modified ROM I got on this forum.
Surface Pro 7 model 1866 SN059810502053
Same, logo...3 seconds and black screen. Here is the sequence.
122: UniqueID:0x201A5800150420EB
123: Start writing chip......
124: Auto erasing...
125: Erase successful,Elapsed time:36.14 seconds.
126: Start writing...
127: Write successful,Elapsed time:69.83 seconds.
128: Auto verifying...
129: Verification successful,Elapsed time:15.41 seconds.
130: Status register1 values: 0x0, Status register2...
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Hello
I apologize for the delay.
I've reconnected the battey and LCD connector (I didn't had to remove radiator to flash ROM), it didn't work. I've flash the new file, same. It start, I see gray windows logo for 2 seconds and it turns off.
Maybe it's the BGA SSD failure.
Thanks
Sam...
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THanks for your help.
1.I didn't desolder the bios. I user a soic clip to erase, write and verify and process was 100% ok. That's how I've read original ROM.
2. The device start, I see the gray windows logo and after 4 seconds it turns off.
3. Yes battery is fully charged.
the problem occured after a W10 upgrade, so that's why I beleive it must be a frimware issue on BIOS and not HW related....
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Yes. After I created the new topic I realtzed I should post here. Sorry....
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Hello,
I have a Surface Pro 7 model 1866 SN059810502053. Bootloop after Windows update. I've tired vol+ and all tricks on internet, nothing work. I've read the Winbond chip. Can I take any BIOS dump here and replace with my serial ?
I see on the shield border this number, 13NL-58N07731. I guess this is the board model.
Thanks
Sam...
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Hello
Surface boot loop after update. All tricks on internet won't work so I've read BIOS Winbond chip. I hope this is the reason.
Thanks
Claude...
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Thank you very much. It didn't work. Power button is on for two second then turn off then on again ... but PC doesn't start.
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Lenovo E490 - FE490 NM-B911REV: 2.0 - Power on but nothing else.. need BIOS help
Hello,
My E490 doesn't start. I get light on power button put fan doesn't turn, nothing on the screen, no bip and CPU or anything get warm, so I guess it must be the BIOS.
I'v read BIOS chip and attached it.
I've tried several BIOS I found on this forum but it doesn't help. I need a custom BIOS ?
on plastic cover I see
Type 20N8-CTO1WW S/N PF-1S9D8Y 19/07
Thanks
Sam...
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