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Search: Posts Made By: sdinelli
Forum: Troubleshooting Power Supplies and Power Supply Design 04-20-2021, 07:32 PM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

alright so update:

since i have two of the same PSU with the same problem, i decided to install the new parts in the second one just to make sure i didnt F anything up on the first one with my...
Forum: Troubleshooting Power Supplies and Power Supply Design 04-09-2021, 09:18 PM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

Very nicely explained, thank you.
Im learning a lot and i hope i can get this working. I appreciate everyone's help
Forum: Troubleshooting Power Supplies and Power Supply Design 04-09-2021, 04:08 PM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

OK thanks, ill play around.
What purpose in the circuit do these have?
Forum: Troubleshooting Power Supplies and Power Supply Design 04-08-2021, 07:36 PM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

not sure how to measure them but the measure open from one side to the other
Forum: Troubleshooting Power Supplies and Power Supply Design 04-06-2021, 07:27 PM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

Alright, good news!!! I'm a dumb ass lol i must have somehow flipped the main switch last time i took measurements and i guess that .4V was just residual and the psu was just off.

OK recap
Just...
Forum: Troubleshooting Power Supplies and Power Supply Design 03-28-2021, 05:34 PM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

meh so after swapping to the 150W something weird happen. im certain i didnt short anything by accident but now im only getting .4V on my mains.
at the point of when i noticed i was probing and...
Forum: Troubleshooting Power Supplies and Power Supply Design 03-27-2021, 03:15 PM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

tried a 150W bulb.
same result.
Bulb didnt even light up though.
Forum: Troubleshooting Power Supplies and Power Supply Design 03-27-2021, 02:23 PM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

Unfortunately that the only bulb i have in the house. its a new house to everything is LED.
I guess ill go out to lowes and pick up some high watt bulbs
Forum: Troubleshooting Power Supplies and Power Supply Design 03-27-2021, 02:21 PM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

Verified i have 3V on ps_on pin
Forum: Troubleshooting Power Supplies and Power Supply Design 03-27-2021, 12:46 PM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

OK i did some testing with the supply switch on but pins not shorted.
my results are
150V across main filter caps.
150V on both source and gate on the two fets i replaced but nothing on the drain....
Forum: Troubleshooting Power Supplies and Power Supply Design 03-27-2021, 11:45 AM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

yes i believe it is a standard incandescent bulb. its just frosted glass i suppose
Forum: Troubleshooting Power Supplies and Power Supply Design 03-27-2021, 11:43 AM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

welp. i guess its a failure.
i get the 5vSB but psu doesnt turn on.
testing a spare 350W psu with the limiter i get all my voltages.

Do you think the 1300W is too much for the limiter or...
Forum: Troubleshooting Power Supplies and Power Supply Design 03-27-2021, 11:28 AM
Replies: 58
Views: 1,977
Posted By sdinelli
Forum: Troubleshooting Power Supplies and Power Supply Design 03-27-2021, 11:14 AM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

Welp here it is, i guess im going to see if i get 5VSB

I if you all dont hear back then :violin: im probably in heaven or hell
Forum: Troubleshooting Power Supplies and Power Supply Design 03-26-2021, 09:19 PM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

Well parts came in. PSU is all back together!
i really wish i had a solder sucker! getting solder out of the holes with just solder wick can be a pain.

Anyways
I just need to find a bulb socket....
Forum: Troubleshooting Power Supplies and Power Supply Design 03-14-2021, 09:08 AM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

Thank you for your time and detailed explanation.
Ill order the stuff and see what happens. :)
Forum: Troubleshooting Power Supplies and Power Supply Design 03-13-2021, 09:49 PM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

well why do they have 5 bands then? its confusing which is why i asked in the first place.
Whats the point in having such a low resistor there? does it act as a fuse?

If you did measure them as 4...
Forum: Troubleshooting Power Supplies and Power Supply Design 03-13-2021, 01:22 PM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

But they measure very low about .03-.04ohms
Forum: Troubleshooting Power Supplies and Power Supply Design 03-13-2021, 09:31 AM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

Well what if im color blind?? :P

I guess im just looking for reassurance before i order. im just guessing on the 2 watts too does that sound about right?
Forum: Troubleshooting Power Supplies and Power Supply Design 03-12-2021, 09:12 PM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

Actually can someone help me identify the specs of these resistors?
I really suck at this for some reason
they seem like metal film 2watt
2x 5.8ohm.05%
1x 65.9ohm.05%

What do you all think?
Forum: Troubleshooting Power Supplies and Power Supply Design 03-12-2021, 08:50 PM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

the 10k resisters are good. i took them out of circuit along with one of the fets in yellow ( the one on the end because it was easy to get out)
it turned on and off as it should.
so it looks like...
Forum: Troubleshooting Power Supplies and Power Supply Design 03-06-2021, 11:15 AM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

Thank you for your thoughts on this.
I may as well just remove the 10K resistor and just test it out of circuit.

yeah i was thinking the same thing about the transistors in yellow.
only thing...
Forum: Troubleshooting Power Supplies and Power Supply Design 03-05-2021, 08:11 PM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

I do have both an ESR meter and a capacitance meter.
the two big caps ( i think these are what youre referring two)
are rated 470uf 400V CapXon
1st: 427uf .167 ESR
2nd: 422uf .177 ESR

both...
Forum: Troubleshooting Power Supplies and Power Supply Design 02-28-2021, 08:05 PM
Replies: 58
Views: 1,977
Posted By sdinelli
Forum: Troubleshooting Power Supplies and Power Supply Design 02-28-2021, 07:48 PM
Replies: 58
Views: 1,977
Posted By sdinelli
Re: 1300W PSU - Help with replacement mosfet

Im sorry its GP47S60X
https://hobbydocbox.com/Radio/75717165-Gp47s60-gp47s60h-power-field-effect-transistor.html
Closest thing i could find
Showing results 1 to 25 of 119

 
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