board number hedwig-6050a2993001-mb-a03 ....i cannot find the boardview nor schematic for this model ....the problem is laptop wont turn on....current load only read 0.020ma when press power button (standby 0.00ma)...here i attach voltage reading on every coil
		
							
						
					hp 14s-cf0125tu wont turn on
				
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			by GjacksonHi all, the PSU originally had a no 12v issue where as soon as I bridged the 5v standby to the ACDC_stby the psu would switch itself off completely. I monitored the voltage on the main filter caps while doing this and saw that the PFC was bringing the voltage up to around 360vdc before shutting down. Given that I saw that as a little low I replaced the PFC feedback resistors from a donor PSU and that got it to power on, without a load no coil whine is present and there is a stable 12v however as soon as I put it in the PS4 it starts whining really badly, however 12v remains stable but after a...
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			by InforgalaxieThis macbook not turn on when i press the power buton. I need disconect the power cable , press 10 seconds the power buton, and press again to turn on.
 
 But when turn on not load the system and are looping.. video attach....08-20-2025, 07:00 AM
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			by araxnidoDear friends, I want to share my experience repairing an ASUS TUF FX506L gaming laptop motherboard: DABKXDMB8E0_F_BKXD. Boardview and schematic are available, as well as the BIOS and ITE ROM.
 
 When the customer brought in this laptop, it was initially dead; it showed no signs of booting for any reason. After hours of measurements, checking each stage, MOSFET, and seeing if there was a short circuit in any capacitor, I discovered a strange 0.7V leakage voltage on the 3V_S5 rail, particularly on the PL9 coil, with the board not powered on. There were 3V_LDO and 5V_LDO voltages, which...
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			by adelfr2009I have a laptop HP Victus 15-fb with motherboard DAG3PRMB8D0, CPU Ryzen 7535HS, and GPU RTX 2050. The laptop has a power issue: it does not turn on at all, and there is no light on the DC jack.
 After inspection, I found that an NMOS near the charger input had a short. I replaced it, but the short remained on the 19V line. I checked the charging circuit and it was fine, but the short appears after the current sense resistor near the charger. The charger does not pass current when connected, so I inject 3V–4V after the sense resistor. No component gets hot, except the CPU which becomes...
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			by momakaFor today's thread, I have a KingWin ABT-650MM ATX PSU. Official web page with the PSU specs is still up and can be found here:
 http://www.rmac.kingwin.com/products.../abt_650MM.asp
 
 I just can't help it when I see a broken / for parts PSU on eBay that's listed for cheap and looks at least somewhat interesting. Well, OK, I won't lie – on the outside, this PSU looks anything but interesting. It's a plain gray box with colorful “spaghetti cables”. 
 
 
 
 
 What mostly drew me into buying it is its 2x PCI-E power connectors...
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