ENERMAX Liberty ELT500AWT

[Behemot]

Re: ENERMAX Liberty ELT500AWT

I think the 1000 uF/10 V is for +5 V SB or -5 V and the 470 uF/25 V is for -12 V rail. So I calculated the price for 1200 uF/6,3 V and 680 uF/16 V, D8.

[Tomcatciller]

Re: ENERMAX Liberty ELT500AWT

Ok, i just unsoldered the 9 caps to see how their condition is.

Beside the obvious bad cap 2, cap 4 and maybe cap 9 are bad.

Now I can give detail information about the original fitted caps:

1: P Ce-Tur 105°C 06-03 10V 3300uF (no damage visible)
2: CTC LLFM 105°C 10V 3300uF Vent 6076 (the obvious broken one)
3: P Ce-Tur 105°C 06-03 10V 3300uF (no damage visible)
4: CTC LFFM 105°C 10V 3300uF Vent 6076 (leakage on the bottom)
5: CTC LFFM 105°C 16V 3300uF Vent 6076 (no damage visible)
6: CTC LFKM 105°C 16V 3300uF Vent 6076 (no damage visible)
7: P Ce-Tur 105°C 06-03 10V 1000uF Vent (no damage visible)
8: P Ce-Tur 105°C 06-03 25V 470uF Vent (no damage visible)
9: CTC LFFM 105°C 10V 1500uF Vent 6076 ( a little bit baggy on top)

I am lucking forward to receive the new caps from Behemot.

Greets

TCC

[Behemot]

Re: ENERMAX Liberty ELT500AWT

They filter output voltage to be smooth. High ripple is the usual cause of PSU and MoBo instability. If the problem is way too great, than feedback or stand by rail breakes and it ceases to start.

[Tomcatciller]

Re: ENERMAX Liberty ELT500AWT

Ok, I decided to do the cap replacement myself. I will purchase the caps from Behemot.

I have another question.

What influence can the damage of these 9 big caps of the psu have? What function have these 3300uF caps? Is there any interaction with the overclocking capability of the mainboard?

@ PeteS in CA:

I checked the backside of the psu circuit and marked the pin locations of the caps. You are right, for the one cap I need to solder in the area of the long wire. But is it really necessary to remove him completely? Is it not enough so remove the solder around the pin area of the cap and leave the long wire in place. It is just one pin which is located in the solder area of the long wire.

Greets

TCC

[Behemot]

Re: ENERMAX Liberty ELT500AWT

I can do that for ya, no problem, just the shipping costs will be somewhat higher. I'll drop ya PM.

[Tomcatciller]

Re: ENERMAX Liberty ELT500AWT

@ Behemot:

Hm, its ok for me. You suggest to replace all 9 caps I marked on the picture, or all these countless tiny (lower then 10mm) caps on the other places on the psu circuit?

Just want to ask kindly if it is possible to fix the problem for me. Because atm I think I dont have the right tools to do this. If it is possible, how much do you want for the complete replacement of the caps, and maybe assemble it back together and test if it works correctly. (Don´t know how to test the psu, it worked until today, I just want to look inside and found the bad capacitor)

The problem is, I need this psu for my old Pentium 4 pc. Another User of this forum said that the boards of these generation need strong 3.3V lines. All modern psu available today don´t have such strong 3.3 V lines. Even the biggest Enermax 1500W+ psu´s dont have stronger 3.3V rails.

So I need a good old psu. I may buy such an ELT500AWT again on ebay for about 35 €, but I can never can be sure these things are in good condition.

Greets from Germany

TCC

[PeteS in CA]

Re: ENERMAX Liberty ELT500AWT

One tip, if in the process of repairing your power supply you have to remove that long wire added to the bottom of the PC Board, be sure to reinstall it. It looks like it is there to improve to current carrying capacity of that trace. My guess is that the manufacturer used a PC Board from a lower power unit, and that trace is not adequate for the unit you have.

[Behemot]

Re: ENERMAX Liberty ELT500AWT

Seems to 100,18 CZK+115 CZK shipping. So something overo 8 E according to actual exchange. Should be there in a week or so, it's just the neighbour country after all

I got Samxon RS for the big ones and NCC KY/KYA for the smaller ones (up to 20 mm height).

[Tomcatciller]

Re: ENERMAX Liberty ELT500AWT

Ok, sounds interesting. How much for a complete cap replacement kit for my psu and shipment to germany? What brands are your caps?

[Behemot]

Re: ENERMAX Liberty ELT500AWT

Replace all the caps, sooner rather than later they will become bad anyway. I can provide you with replacement capacitors, ATM I am the only supplier of high-quality 3300uF/16V D10 caps.

As for sodlering, I use 125W transformer solder iron and dental explorer .

[Tomcatciller]

Re: ENERMAX Liberty ELT500AWT

Hello Guys

I have a problem with my ENERMAX Liberty psu and dont want to use annother thread, so I abuse this one.

I have one bad cap on my ELT500AWT and want to recap it for better oc stability. I thought my P4C800E dlx has problems with oc stability, but know maybe the psu is the culprit.

I never had real problems with this psu. But maybe this cause these "all of the sudden pc turn offs" with all my 4 P4C800E dlx Boards. It was random, most time when I connect a usb device the pc turns immediately off and sometimes dont turn one for some time. Unplug the power cable of the psu and wait for 10 minutes solved the problem the most time. I never thought this was a psu problem because I thought Enermax was a very good psu manufacturer. I thought this was the common known "USB latchup" problem with or in the southbridge of the P4C800E dlx boards.

No matter what, now I want to replace the bad, and maybe all other big caps of my psu. The question is, what caps I need and where can I purchase them?

I marked the caps on the picture and here the information I can see:

1: P Ce-Tur 105°C 06-03 10V 3300uF
2: CTC LLFM 105°C 10V 3300uF Vent 6076 (the broken one!)
3: P Ce-Tur 105°C 06-03 10V 3300uF
4: CTC LLFM 105°C 10V 3300uF Vent 6076
5: CTC LLFM 105°C 16V 3300uF Vent 6076
6: CTC LLKM 105°C 16V 3300uF Vent 6076
7: P Ce-Tur 105°C 06-03 10V 1000uF Vent
8: Ce-Tur 25 V (cannot see anything)
9: CTC 105°C 10V 1500uF Vent 6076

These are only the bigger ones. Should I replace also the smaller ones?

Another question is how to solder this. I dont have any good tools, so I ask if I need better ones for the replacement of the caps. Also the solder quality is poor. When I disassembled the psu I broke a lug out of the circuit by shaking it to release a cable shoe there. No big match to repair this, but to braze the caps in and out I must solder in a very tight area with other components, It seems so the solder on the circuit is very brittle.

Greetings from Germany

TCC

[Behemot]

Re: ENERMAX Liberty ELT500AWT

Outta ideas than, sorry…well, only one wild, maybe some shunt or resistor on feedback is bad, making the PS223 think it is overloaded?

[bgaservis]

Re: ENERMAX Liberty ELT500AWT

Yes, 2.2uF and 10uF. I replaced those too.

[Behemot]

Re: ENERMAX Liberty ELT500AWT

Is there any small cap nearby?

[bgaservis]

Re: ENERMAX Liberty ELT500AWT

Yes, replaced those.

[Behemot]

Re: ENERMAX Liberty ELT500AWT

Yeah somewhere around there. Should be for +5 V SB and -12 IIRC in there.

[bgaservis]

Re: ENERMAX Liberty ELT500AWT

Do you think the ones that are rated 10v 1000uF and 10v 1500uF ( bottom left ) ?

[Behemot]

Re: ENERMAX Liberty ELT500AWT

Did you also replace caps on +5 V SB rail? I got similar problems with these bloated. Fortrons also do that.

[bgaservis]

Re: ENERMAX Liberty ELT500AWT

Hi guys,

Sorry for interupting caps thread , I need help with yet another one Enermax ELT620AWT.

PSU has standby 5V, can be turned on without load(bridging green and black) but it wan't turn on when there is load ( attached to motherboard alone )

When it's on all voltages are ok, 3.3V, 5V and 12V.

What was done on it:
- Replaced all the caps on rail exits
- Replaced small caps 2.2uF and 10uF on the small board on the side ( where is UCC3817 and LM393N )
- Replaced SP223 IC chip
- Replaced optocouplers
- Checked most of the diodes, transistors, don't have any obvious shorts or similar problems

What to check next ?

Did someone have similar problems with this units ?

I have 2 of them and both are acting the same...

[c_hegge]

Re: ENERMAX Liberty ELT500AWT

When there's only 1 or 2 series of caps which will fit (like in this case), then I just disregard the specs (as long as they aren't GP caps). The Panny FR caps will work just fine. The ripple may be a bit higher than when the PSU was new, but they will work fine. Go ahead and use them if they fit.