Re: Zalman ZM500-GV stops after 40s and 5VSB drops to 2.5V
I didn't say it was worthless...
You can't really test things correctly in circuit, unless you know the circuit or have a schematic for it. Right now you don't know what you are measuring. Yes, a fishy testing component, you have to take out and test it out of circuit.
A SMD diode with a marking of T4 (the bar marks the cathode) is a stinking ole 1N4148 signal diode. Very common.
To me I am not convinced that the 1.1 volt difference between them two optocoupler pins is enough to turn this thing successfully on and stay on. Typical this opto has a FV of 1.2V. You got 1.1V and I'd say you should get way more that but under 5V in between these.
I didn't say it was worthless...
You can't really test things correctly in circuit, unless you know the circuit or have a schematic for it. Right now you don't know what you are measuring. Yes, a fishy testing component, you have to take out and test it out of circuit.
A SMD diode with a marking of T4 (the bar marks the cathode) is a stinking ole 1N4148 signal diode. Very common.
To me I am not convinced that the 1.1 volt difference between them two optocoupler pins is enough to turn this thing successfully on and stay on. Typical this opto has a FV of 1.2V. You got 1.1V and I'd say you should get way more that but under 5V in between these.
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