vettouch
Senior Member
Last Activity: 04-24-2025, 08:12 AM
Joined: 09-01-2020
Location: imo, owerri
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@[B][URL="https://www.badcaps.net/member/545276-friedfred"]FriedFred[/URL][/B]; a point to note is that when I stay in BIOS, the system doesn't restart, but as soon as it tries loading windows, it gives the WHEA UNCORRECTABLE ERROR. This is so worrisome to me.@[B][URL="https://www.badcaps.net/member/545276-friedfred"]FriedFred[/URL][/B]; a point to note is that when I stay in BIOS, the system doesn't restart, but as soon as it tries loading windows, it gives the WHEA UNCORRECTABLE ERROR. This is so worrisome to me.@[B][URL="https://www.badcaps.net/member/545276-friedfred"]FriedFred[/URL][/B]; -
@[B][URL="https://www.badcaps.net/member/545276-friedfred"]FriedFred[/URL][/B]; If the coils do not have their appropriate voltage, what will I need to check?@[B][URL="https://www.badcaps.net/member/545276-friedfred"]FriedFred[/URL][/B]; If the coils do not have their appropriate voltage, what will I need to check?@[B][URL="https://www.badcaps.net/member/545276-friedfred"]FriedFred[/URL][/B]; If the coils do not have their appropriate voltage, what will I need to check?Leave a comment:
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@[B][URL="https://www.badcaps.net/member/545276-friedfred"]FriedFred[/URL][/B]; I applied some new thermal paste on the processor and the VGA, but the error persists. Yes, all the coils have some voltage.@[B][URL="https://www.badcaps.net/member/545276-friedfred"]FriedFred[/URL][/B]; I applied some new thermal paste on the processor and the VGA, but the error persists. Yes, all the coils have some voltage.@[B][URL="https://www.badcaps.net/member/545276-friedfred"]FriedFred[/URL][/B]; I applied some new thermal paste on the processor and the VGA, but the errorLeave a comment:
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@[B][URL="https://www.badcaps.net/member/545276-friedfred"]FriedFred[/URL][/B]; the laptop enters BIOS on pressing F2, and memory and HDD tests passed. I noticed that each time the laptop is powered on from its power button, it runs for few seconds and restarts on its own. The laptop is an AMD processor.@[B][URL="https://www.badcaps.net/member/545276-friedfred"]FriedFred[/URL][/B]; the laptop enters BIOS on pressing F2, and memory and HDD tests passed. I noticed that each time the laptop is powered on from its power button, it runs for few seconds and restarts on its own.Leave a comment:
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See the board[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"compaq presario cq61, g61.png","data-attachmentid":3613019}[/ATTACH]...
Leave a comment:
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@[B][URL="https://www.badcaps.net/member/149220-mcplslg123"]mcplslg123[/URL][/B]; Most coils have their voltages except one 1R5 coil, which was supposed to have 1.5v or so but had a very weird 58.6v when probed with a multimetre. The said coil is close to RAM connector.@[B][URL="https://www.badcaps.net/member/149220-mcplslg123"]mcplslg123[/URL][/B]; Most coils have their voltages except one 1R5 coil, which was supposed to have 1.5v or so but had a very weird 58.6v when probed with a multimetre. The said coil is close to RAM connector.@[B][URL="https://www.badcaps.net/member/149220-mcplslg123"]mcplslg123[/URL][/B];Leave a comment:
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mon2[USER="295753"]mon2[/USER]; the board comes on with fan spinning, but no activity with a USB mouse or keyboard attached.Leave a comment:
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mon2[USER="295753"]mon2[/USER] Resistance to ground of +3VLCD_CON;
with LCD connected: @20 ohm meter range - 984; @20K ohm meter range - 4.80; @200K ohm meter range - 5.2; @2000K ohm meter range - 003;
with LCD disconnected: no reading for all meter ranges. ThanksLeave a comment:
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WHEA UNCORRETABLE ERROR on HP 6735s HELP!!!
Hello Techs, I have tried changing RAM, hard disk, power supply, but WHEA UNCORRECTABLE ERROR still persists. What I have not done is BIOS update, but I reset BIOS to Default settings. -
SHORT ON +3VLCD_CON (NO +3V) - HP COMPAQ G61
Please, see attached schematic and help me find solution to this HP COMPAQ G61, which has no display on both LCD and CRT. Thank you.
[COLOR=#8e44ad][B]Link to schematic[/B][/COLOR] - [url]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/schematic-requests-only/3470342-hp-cq61-scehmatic-diagram-needed[/url]Please, see attached schematic and help me find solution to this HP COMPAQ G61, which has no display on both LCD and CRT. Thank you.
[COLOR=#8e44ad][B]Link to schematic[/B][/COLOR] -
Re: HP Compaq 6510B inventec Rev 1.0 - U28 IC GETTING HOT
The new measurements are of the part that is on the table (mosfet). The PCB pads still read source and drain = 0001
source and gate = 1558
gate and drain = 438Leave a comment:
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Re: HP Compaq 6510B inventec Rev 1.0 - U28 IC GETTING HOT
@mon2
Resistance check on Q49; metre @ 2000/20k ohms
source and drain = no reading
source and gate = no reading
gate and drain = no readingLeave a comment:
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Re: HP Compaq 6510B inventec Rev 1.0 - U28 IC GETTING HOT
@mon2
[B]Resistance check on Q49; metre @ 20k ohms[/B]
source and drain = 0000
source and gate = no reading
gate and drain = no reading
[B]metre @ 2000 ohms[/B]
source and drain = 0001
source and gate = 1558
gate and drain = 438Re: HP Compaq 6510B inventec Rev 1.0 - U28 IC GETTING HOT
@mon2
[B]Resistance check on Q49; metre @ 20k ohms[/B]
source and drain = 0000
source and gate = no reading
gateLeave a comment:
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HP-Compaq-6910p- Plugged in, Not Charging
Please, how can I diagnose this laptop which has been tested with best of battery, charger and still, it doesn't charge. How do I test with multimetre to troubleshoot if it is charging IC. Thanks. -
Re: HP Compaq 6510B inventec Rev 1.0 - U28 IC GETTING HOT
original part # for Q43 = FDS8884
replaced it with same part # from another board
resistance to ground for parts observed to be shorting
metre @ 200 ohms
Q49 = 16.2
C290 = 16.9
C291 = 16.7
Q51 = 16.5
C336 = 17.9
C308 = 38.9Leave a comment:
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Re: HP Compaq 6510B inventec Rev 1.0 - U28 IC GETTING HOT
@ mon2. While diagnosing this board yesterday, I suddenly discovered a burn on Q43. So, I found a replacement for it. After that, I also discovered shorts on Q49, C290, C291, and C336. What have I done wrong? See the attached picture of the board....Leave a comment:
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Re: HP Compaq 6510B inventec Rev 1.0 - U28 IC GETTING HOT
@mon2. I can't locate R425, R424 resistors. I feel they are not labeled. Please, how can I locate them?Leave a comment:
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Re: HP Compaq 6510B inventec Rev 1.0 - U28 IC GETTING HOT
@ mon2. I discovered 3.8v and 5.6v around this U28. What could be causing it? Also, most of the caps, coils and the likes around ICH are shorting on test with metre. Could the SIO be bad?Leave a comment:
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Re: HP Compaq 6510B inventec Rev 1.0 - U28 IC GETTING HOT
@mon2
resistance checks on pin 19 and 21 of U28
metre readings @ 2000 ohm setting
pin 19 = 811
pin 21 = 793
Thanks and please, assist me more.Leave a comment:
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Re: HP Compaq 6510B inventec Rev 1.0 - U28 IC GETTING HOT
Someone please, help me resolve this issue.Leave a comment:
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