Itek Atx 500W does not turn on

[falcontech]

Re: Itek Atx 500W does not turn on

But the old one is all burnt and some turns are shorted together

[CapLeaker]

Re: Itek Atx 500W does not turn on

well... that is bad then. there shouldn't be multiple wires shorted together. you should have one input and output per wire. take it off and see if the short goes away.

[falcontech]

Re: Itek Atx 500W does not turn on

but this is an operation that I had already done, the new inductor has already been installed since we started the discussion

[CapLeaker]

Re: Itek Atx 500W does not turn on

take everything off that 5v rail until the short to gnd disappears.

[falcontech]

Re: Itek Atx 500W does not turn on

I have disconnected the heatsink with all the diodes and I have the same short

[falcontech]

Re: Itek Atx 500W does not turn on

take everything off that 5v rail until the short to gnd disappears.

ok

[falcontech]

Re: Itek Atx 500W does not turn on

it is a resistance that gives me the short on the 5v but to the eye it looks good

[falcontech]

Re: Itek Atx 500W does not turn on

Ok I removed the short, tomorrow I try it and I will let you know thank you

[falcontech]

Re: Itek Atx 500W does not turn on

it was that damned resistance

[CapLeaker]

Re: Itek Atx 500W does not turn on

hopefully it works now...

[falcontech]

Re: Itek Atx 500W does not turn on

Unfortunately there is still nothing else to start, now the voltage on the 12v when I turn on the power supply is much lower, about 1.50 volts and then drops to 0.3 what should I check again?

[falcontech]

Re: Itek Atx 500W does not turn on

on pin 12 I always have low current 5.40 volts

[CapLeaker]

Re: Itek Atx 500W does not turn on

so what dd you do? You removed that short on that 5V rail, you put the inductor back on and nothing works? So what was causing that short on the 5V rail then?

[falcontech]

Re: Itek Atx 500W does not turn on

the short was caused by a resistance not by the inductor, the short has gone away but still does not turn on

[CapLeaker]

Re: Itek Atx 500W does not turn on

So a resistor made that short? bleeder resistor to GND? Put it back in again, maybe it needs a minimum load to start?

[falcontech]

Re: Itek Atx 500W does not turn on

what should i put inside? I replaced the resistance, it was located between the gnd track and the 5 volts track

[CapLeaker]

Re: Itek Atx 500W does not turn on

This doesn't make any sense, why the PSU isn't turning on anymore. just put the old resistor back in there and see if it starts again to proof something

[falcontech]

Re: Itek Atx 500W does not turn on

Ok

[falcontech]

Re: Itek Atx 500W does not turn on

the resistor that created the short had the colors brown black green gold i.e. 1mohm but it marked me 50 ohm the one that I replaced me from perfect 1mohm

[CapLeaker]

Re: Itek Atx 500W does not turn on

resistors don't loose any resistance, they go higher in resistance. You say you have a matching PSU to this one? Is really everything identical?