Was trying to find a short on my motherboard and it started to smell. I left it alone and now the display always shows 4.095 like there's a constant short. Took it apart and something that was toast to the point that I don't know what it was. I assume resistor since it says R28 next to it. Anyone know what this resistor value is suppose to be? Has anyone else ran into this issue with this tool? Still says 4.095 even though I removed the resistor.
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Answer selected by Dukenukemx at 01-17-2024, 01:21 AM.
it is a fusistor. you can just jump it but you would have no protection. just replace for another 0ohm fusistor or something close to 0I think it's a 0hm resistor. Short it with a screwdriver and it works normal. `Makes sense since not many resistors have that many zeros. I wonder if I should replace it with another zero ohm resistor just put in a fuse? I might try 100, 200, 300, and etc to see if there's a different reaction from the device. It's funny because nothing in here makes use of the heatsink looking giant metal casing.
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I think it's a 0hm resistor. Short it with a screwdriver and it works normal. `Makes sense since not many resistors have that many zeros. I wonder if I should replace it with another zero ohm resistor just put in a fuse? I might try 100, 200, 300, and etc to see if there's a different reaction from the device. It's funny because nothing in here makes use of the heatsink looking giant metal casing.
Last edited by Dukenukemx; 01-15-2024, 11:40 PM.Comment
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it is a fusistor. you can just jump it but you would have no protection. just replace for another 0ohm fusistor or something close to 0I think it's a 0hm resistor. Short it with a screwdriver and it works normal. `Makes sense since not many resistors have that many zeros. I wonder if I should replace it with another zero ohm resistor just put in a fuse? I might try 100, 200, 300, and etc to see if there's a different reaction from the device. It's funny because nothing in here makes use of the heatsink looking giant metal casing.
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Hi,
I am working on an Asus ROG laptop repair. I was able to find that there is a short on the motherboard, and the 20 volts from the charger only gets to the first mosfet before disappearing.
When looking around with a thermal camera, I noticed the chip marked "14C" in the picture was getting warm. Nothing else was receiving heat.
I found a boardview diagram and schematic for a motherboard that looks nearly identical, that has the same component. This appears to be marked as "AC Short Protection" with a value of 13.7KOhms.
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That's now the second time in my repair career that a through hole resistor go short!
it was a Vishay CPF124K900FHB14 1W resistor measuring new 24.9kohm. <- notice the KILO ohm. Well now it measures 28.1 Ohm!
See picture and PDF attached. This is something very rare happening, but apparently it does happen!...
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Hi Folks
I'm looking for a extreme high current short killer solution for a reasonable cost.
I have an LGA1700 motherboard (ASUS PRIME Z790-P WiFi) where I exchanged the LGA socket already 3 times, and every time after the socket exchange I get a short of power supply lines VCORE (V variable) and VCCIN_AUX (1.8V).
After taking off the socket, the shorts dissappear again.
The soldermask on the socket is already partially demaged from the heat, so I have reconstructed the soldermask by manually painting the missing soldermask parts with a very small top of a...10-15-2024, 10:13 AM -
Hi
I am trying to repair an ancient Dell 2209WA Monitor which suddenly shut off with a pop sound. On investigation found that one of the fusible resistors had blown. Further investigation identified multiple components as faulty because of which the fusible resistor blew. Please refer the attached circuit diagram showing the components that were found to be damaged.
1. FR950 - blown fusible resistor - 0.2 Ohm 1W
2. Q950 - shorted Q950 MOSFET - 650V 10A N Channel Mosfet
3. R835 - Blown Resistor - 20KOhm SMD resistor
4. D930 - Shorted Schottkey Diode... -
Hi to all forum members,
Got this faulty 350 watt atx psu dirt cheap from a local online seller as i am keen to use it as a learning tool to repair faulty power supply.
The faulty part is quite obvious from the burn area near the 16pin KA7500 BD pwm. The fuse is still intact with good continuity.
Upon power on ac, there is 5vdc standby power on cathode of diode D14 and about 10vdc on cathode of diode D13.(This should be the aux power to generate the 12v and 5v rail.)
Initially i replace the two burned resistors near my marked red arrow to 200 ohm resistor...
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