i have problem with vcore on this product then i need boardview to repair.
Model: Prime H410M-CS
Brand: Asuck...
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Screwed onto the board. Thoughts?
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Today, 04:52 AM
-
Dear forum,
I'm stuck with this old TV unit.
PSU: 17PW04-1
MB: 17MB62-1
Symptoms:
- Blue LED constantly blinking when connected to AC.
- Only sigh of life is beeping when touching the capactive buttons on the front.
Diagnostics so far:
Checked the PSU output voltages:
12V present
5V present altought its only around 4.2V
3V is present measured 3.4V.
I check TP 202 which is for the short circuit protection: 0.606V on diode mode
Since I met with some vestel models before with similiar symptoms...05-03-2024, 03:18 AM -
I am still new to this, so I might sound brainless/ignorant in parts of my description/questions, since I have a lot of gaps in my knowledge, but I will do my best.
The laptop is Lenovo Legion Y540-15IRH, and the motherboard model is NM-C221 Rev 2.0 (Schematics and BoardView can be easily found). To save time I have the exact problem in the laptop as the one shown in this video:
[url]https://www.youtube.com/watch?v=tfucZ_WKpz4[/url]
I was checking the voltages I found that the main power rail V20B+ is good, and same for the +3VALW circut, but when I tried the +5VALW,...Yesterday, 10:52 AM -
Please i need help. I have the password but tried to removed COMPUTRACE using auto patcher. Now PC stuck on entering setup....
Original BIOS backup is attached.
Someone please HELP...Today, 04:26 AM -
Hi guys,
A few days ago i asked a real hard question regarding plasma tv's but nobody could respond. I need to ask if anyone has replaced this IGBT with another type that actually worked.
The industry is awash with fake chinese knock offs.
I am so frustrated.
Kind Regards
A AnagnostouToday, 04:04 AM -
-
Hi
I have a Citronic AC-1USB.
When I run a turntable into it and then try to record it. The volume is too loud and distorting. In the red. Mainly 12” Singles. I haven’t tried a CD into it yet. I’m wondering if there is any way to bring the volume down inside the unit itself. Change a part or two. Put a small pot somewhere as there are no adjustments at all in there. I’m looking for the schematic but not found one yet.
Heres the circuit board inside.
Cheers
[ATTACH=JSON]{"data-align":"none","data-size":"full"...04-30-2024, 06:17 AM -
Hello. Coming to you from the laptop forum. Have a client with the Fortinet 50E that has 320 Mbps as internet input speed but only 20 Mbps output on each and every downstream port (using FAST.COM to benchmark).
Reseller is stating the Fortinet is 'worn out' which does not sound logical at all unless the flash memory is 'worn out'. They, of course, want to sell another + onsite installation fees.
Can anyone share feedback on this unit? What can cause this sluggish behavior. From our knowledge, this device is snooping on the traffic to halt viruses / hack attacks, etc....04-24-2024, 12:51 PM -
Attached schematic 🙂.
Laptop gives no signs of life. No fan and no CPU heat.
Think Engine BD4179MWV is hot on plugging in *AND* pressing the power button.
Discovered short to ground on VCC5M power delivery IC NB690GRP (5 volt line, not the high current VCC5M_PD) which is one of the ways that chip is powered. I'm puzzled.
Nothing else is warm on the board. CPU resistances are OK, 9V VSYS line is present from the BMIC. All misc and cables are disconnected.
What do you guys think happened? I've got two theories:
If the...I think ThinkEngine shorted first0I think 5V SMIC shorted first0I think something else happened005-07-2024, 04:44 PM -
Hello everyone, Due to a bad bios flash this Omen has a weird issue.
In the BIOS it says the ME version is 0.0.0.0 and when I try to update the BIOS it writes the bios region but when it reaches the firmware and ME it says it failed.
Tried HP USB recovery way and nothing worked.
I am kinda stuck, the main problem right now is the laptop would boot within 5 mins until the ME drivers load in windows and all works normally....Today, 03:02 AM
-
-
Hi guys,
A few days ago i asked a real hard question regarding plasma tv's but nobody could respond. I need to ask if anyone has replaced this IGBT with another type that actually worked.
The industry is awash with fake chinese knock offs.
I am so frustrated.
Kind Regards
A AnagnostouToday, 04:04 AM -
Hello everyone, Due to a bad bios flash this Omen has a weird issue.
In the BIOS it says the ME version is 0.0.0.0 and when I try to update the BIOS it writes the bios region but when it reaches the firmware and ME it says it failed.
Tried HP USB recovery way and nothing worked.
I am kinda stuck, the main problem right now is the laptop would boot within 5 mins until the ME drivers load in windows and all works normally....Today, 03:02 AM -
Hi friend, I've this notebook HP Gaming 16-a0006nl with QUANTA DAG3JBMB8D0 that won't power on.
I start checking first mosfet and they seems to be ok.
On power button I get 3 that go to 0 on pressing, and come to 3v on release.
After I check charge ic that is BQ738H
I write here measure with battery and ac
19
19
19
25
3
1.9
0
3.1
3.1
1
11
11
11
gnd
0
6
10
11
11
19
I've 0 on pin 7 IOUT and on pin 15 LODRV.
...Yesterday, 07:09 AM -
I have an Asus G14 (GA401QM) that has a power issue. Originally the board had a shorted 5V rail and dead EC. I reballed a working EC, soldered it on, and I resolved the 5V issue by replacing the APL6012 and the low side 5V mosfet. Resistances on all power rails are healthy now, but 20V does not make it through the first MOSFET. 20V is present on the drain of the first MOSFET, but there is no voltage on the gate or source.
When diagnosing this issue, I thought that the issue was due to the BQ24800 chip not outputting the correct signals so I soldered on a known working chip and the...Yesterday, 01:30 PM -
Hi,
working on a ASUS ROG STRIX GL702VSK 60NB0DZ0-MB1260 that does not power on. At the PQ8900 PIN2 (P_CHG_ACMOS_G_20) I am receiving 24.7V and PIN1 (P_CHG_ACMOS_S_20) 20V, however when I place the PQ8901 P_CHG_ACMOS_G_20 it drops 0V. I don't have the replacement mosfets ( N-MOSFET QM3058M6AC PRPAK5*6
UBIQ) however will any N-channel mosfet with similar parameters work ? I also found that PCI8703, PCI8701 are shorted. any help would be grateful.05-07-2024, 04:34 PM -
Hello,
This special tool from Apple is used to recover data from Macbook A1706. I've been using it for a while but it stops working. When connecting Thunderbolt 3 between the tool and working Macbook, Macbook should prompt "new device detected, allow or not"... but it doesn't.
Has anyone ever experience this ? It's not a cabling or power supply issue, some IC have stopped working but not sure which one. Probably the one that manager thunderbolt 3
Thanks
Claude...Today, 02:02 AM -
Please i need help. I have the password but tried to removed COMPUTRACE using auto patcher. Now PC stuck on entering setup....
Original BIOS backup is attached.
Someone please HELP...Today, 04:26 AM -
-
Hi, I'm seeing one 9V relay having temperature 40C on its 9V (primary) side. Does that seem right? I switched 2 relays on that board and the temperature was the same (on the same position), so I'm sure it's not a faulty relay. I measured voltage on that relay and it was 9.5V DC, so that looks good. I don't see any other relay on that board having that kind of temperature and they have 9V on them too.
I thought maybe the transistor that is switching this relay keeps switching on/off, so I also checked for AC and there was almost none: 0.3V using mV range. No steady frequency was shown, but...Today, 03:03 AM