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Old 07-01-2017, 06:32 AM   #121
C0C45
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Default Re: iMac 24 PSU LITEON PA-3241-02A1 250W

Thanks mate,

I will buy TO-220, with TO-220 mica, I think that it's sufficient.

Thanks again
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Old 07-01-2017, 09:26 AM   #122
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Question Re: iMac 24 PSU LITEON PA-3241-02A1 250W

?????

With the ones you showed from ebay, plastic package, no insulator is necessary.

BTW: Be careful there. That is only for 1 piece, not 2 as pictured. I hate when they do that. Tricky bastards!

This is a better deal: http://www.ebay.com/itm/281410772068

T
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Old 07-01-2017, 01:12 PM   #123
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Default Re: iMac 24 PSU LITEON PA-3241-02A1 250W

Thanks mate
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Old 09-13-2017, 04:39 PM   #124
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Default Re: iMac 24 PSU LITEON PA-3241-02A1 250W

Hi Toasty

I have been reading through the thread and gaining knowledge on this psu. I think I'm going to replace all the caps. its an imac 24 with the Liteon psu. About three years ago it shut down and began tripping the circuit breaker in the house. I pulled the psu and connected it to the mains power only and tripped the breaker. Last month i tested the transistors and diodes, found them all good. So i ordered a working one on ebay, but tried the psu once more and after all this time, it was working again which was really great, and i canceled my order . it has been working for about a month with light use. Well, last night I got a screen telling me i need to restart, i'm thinking its about to go out of order soon. Would you advise on this?
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Old 09-13-2017, 05:44 PM   #125
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Default Re: iMac 24 PSU LITEON PA-3241-02A1 250W

Welcome!

Your statement about tripping the house breaker makes me suspicious that there's something wrong with that circuit. The supply would blow its internal fuse long before the house breaker would trip.

Recapping is a good idea. I would leave out the Mains caps and just stick to the others.

Just make sure you don't have a motherboard caps problem.

T
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Old 09-13-2017, 10:03 PM   #126
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Default Re: iMac 24 PSU LITEON PA-3241-02A1 250W

Thank you very much I found these capacitors in post 81 in this thread. Should I only replace these?

3 - 2200/16 - UCC KY
1 - 2200/16 - UCC KZH
2 - 470/50 - MAT FM

What should I do to investigate the circuit where the fuse don't blow?
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Old 09-14-2017, 02:33 AM   #127
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Default Re: iMac 24 PSU LITEON PA-3241-02A1 250W

I'm talking about a problem with your house electrical circuit, not the power supply.

Yes, those are my general suggestions for caps for this PSU.

T
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Old 09-14-2017, 03:15 PM   #128
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Default Re: iMac 24 PSU LITEON PA-3241-02A1 250W

Bad inrush NTC could make the breaker trip? Or would that blow the PSU fuse?
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Old 09-14-2017, 04:33 PM   #129
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Default Re: iMac 24 PSU LITEON PA-3241-02A1 250W

There is no inrush NTC on these, but there is an MOV. It's after the fuse (5A) which would certainly blow before the house circuit breaker (15A ?).

T
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Old 09-19-2017, 12:17 PM   #130
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Default Re: iMac 24 PSU LITEON PA-3241-02A1 250W

Yeah house is 20A and actually part of that circuit failed completely. The breaker tested good, but a several wall outlets have no power since.
After that I tried another outlet. Seems like the breaker tripped there also, but this is going on three years ago, the PSU was most definate dead.
Toasty, I found the UCC caps, but I'm not finding any MATs. Would you point me to them?
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Old 09-19-2017, 04:35 PM   #131
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Default Re: iMac 24 PSU LITEON PA-3241-02A1 250W

MAT = Matsushita(formerly) = Panasonic

I use the FM series - EEUFM1H471
Another choice would be the FR series - EEUFR1H471

Both are 12.5 x 22mm

Whichever is least expensive.

Who are you sourcing the parts from?

Please post the manufacturer's numbers you are ordering for review before ordering.

All should be 12.5mm diameter and 20 to 25mm in height.

T
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