PC source with very high voltages at the THERMALTAKE PUREPOWER output
Good evening Alfredo, what Barbesi says is true, I recommend that you locate the CI its code, many sources have two, the CI494 and the comparator LM339, there are others that have only one IC. You have a voltage regulation problem, when this It is presented because the source is ripped, you have to check the IC, and look for the diagram if it is found and see if it has the regulator circuit, many sources that have the Ci494 have a TL431 regulator circuit that monitors the standby source and another TL431 that monitors an output.These are associated with a group of resistors that make up the circuit.
Ok friend thanks for the advice ... I'm going to check and I'll be warning if I find the solution.
Reviewing I found two integrated, comparator 339, pulse width modulator 494, and TL431 (PRECISION REFERENCE). I will take off the TL431 to verify it dear.
Friend I already fixed the problem of the voltages ... it was the 817C model octocoupler, I changed it and the voltages returned to normal.
Reviewing I found two integrated, comparator 339, pulse width modulator 494, and TL431 (PRECISION REFERENCE). I will take off the TL431 to verify it dear.
Friend I already fixed the problem of the voltages ... it was the 817C model octocoupler, I changed it and the voltages returned to normal ... thanks Barbesi, for your recommendations I could get to the fault.
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