Questions tagged [component-failure]
For questions about what causes components to fail, how to prevent component failure, and component failure modes (e.g. fail open or fail short).
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What factors could have caused the ceramic capacitors on this board to crack?
While examining an old VGA card for faults under a microscope I found that all of the ceramic capacitors had cracked. The card is circa 1991 so it does have some age on it. But I wouldn't expect solid ...
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Why is only one channel of my dual H-bridge motor driver design failing?
I have a dual motor driver board I designed for driving 2 linear actuators with 48V and each one has as rated full load current of 3.5 amps. I can expect up to 10 amp short duration on startup, but ...
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Discolored negative lead on electrolytic capacitors
Would the discoloration around the negative lead of these capacitors be a sign of failure? If so, why would the negative lead darken instead of the positive - or both leads.
They are Maron EFM 35 ...
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Help fixing a power switch
While disassembling a Sega Saturn to clean it, I removed this power switch:
I needed to separate the top grey button (1 in the image) from the rest of the switch.
After verifying with a multimeter ...
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Failure mode of two series LEDs
I have an "interesting" circuit failure. The circuit basically looks like
simulate this circuit – Schematic created using CircuitLab
The left branch works perfectly fine. The right ...
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Have my LEDs failed over time?
I installed 6 battery-powered 1Watt LEDS in my dad's home to help when he has power outages. They worked as intended for some time, but recently begun to fail in an odd way. They no longer turn on ...
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Calculation of Junction Temperature
I have a PCB and trying to measure the maximum junction temperatures of the major components in the PCB which in full working mode. For example like Input Diodes, Buck Regulator ICs, Aluminium ...
user220456
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Schottky diode failure
TLDR:
What are possible failure sources for a schottky diode? Overheating, overvoltage, overcurrent (leading to overheating) anything else?
Long version
I am currently measuring our new prototype ...
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Potentially unusual LED failure
One of the LEDs in a plug equipped with over-voltage protection does not light up when the device is plugged into the 230 V mains. It has worked well for a while since the product was purchased. An ...
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Op-amp failure and prevention
simulate this circuit – Schematic created using CircuitLab
I'm a programmer and self-taught digital designer, and I thought I could deal with an op-amp even though I haven't for over 20 years.
...
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Is is possible to calculate the MTBF or Failure rate from a given datasheet when manufacturer have not given these details?
As there are new components getting added to the mouser or digikey, is it possible to calculate the failure rate based on some pre known facts and values? some vendors don't reply for weeks and I can'...
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Data errors from network device at high ambient temperature(60C)
I have a Raspberry Pi Compute Module 3 based network device that I am trying to get working at high ambient temperatures (up to 60C). When I run TCP packets through the device, I get checksum errors ...
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Suitable Replacement for a Dual Coil Latching Relay
After questioning about my broken thermostat there Debugging an old Thermostat: What component is this? (3 pins SMD IC), thanks to @JRE I could find that it was actually the relay on the board that ...
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Debugging an old Thermostat: What component is this? (3 pins SMD IC)
My Thermostat stopped working a couple of days ago and I tried to debug it.
The first thing I check is if there is any component that gives a strange result with the multimeter and I found these ...
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How to read different IV charts in the "component tester"?
I am doing a "comparison test" of 2 cards with the component tester. My component tester has 4 different test modes. LOGIC, LOW, MED and HIGH. LOGIC (10V 10mA), LOW (10V 100mA), MED (20V 5mA) and HIGH ...
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