thermaltake tr2 430w

[Wester547]

Re: thermaltake tr2 430w

Not sure what you mean here.
Most electrolytic capacitors specify a +/-20% tolerance for their capacitance. It doesn't matter whether you're designing an LC filter circuit or not - you still have to take into account that if you're using electrolytic capacitors, their capacitance may vary up to +/-20%.

You said that ripple might augment if you increase the capacitance of the secondary capacitors too much... is it the same for the primary capacitors?

Also, if the output capacitor's capacitance doesn't determine the power the secondary can output... how is it that it does for the primary (needing a certain uF rating to achieve a certain maximum power output)? ^^;

[c_hegge]

Re: thermaltake tr2 430w

I just got one of these PSUs in to repair. It has two bad caps and a rather "well-done" torroid coil.

[rogfanther]

Re: thermaltake tr2 430w

Had the fan stopped ?

Will you rewind a new toroid, or just swap one from another psu ?

[c_hegge]

Re: thermaltake tr2 430w

The fans are fine, so IDK why the coil burned up. As for a new coil, I'll just scavenge one from another PSU. I have a dead Besta PT-550 which I blew up on the tester. The coil looks about the same size, so I'll try it.

[ben7]

Re: thermaltake tr2 430w

The fans are fine, so IDK why the coil burned up. As for a new coil, I'll just scavenge one from another PSU. I have a dead Besta PT-550 which I blew up on the tester. The coil looks about the same size, so I'll try it.

Possibly they messed up on the core material.

[Phaihn]

Re: thermaltake tr2 430w

does all that look normal or are there some under voltages?

[everell]

Re: thermaltake tr2 430w

I just got a Thermaltake model TP-1500AH5CES, looks very clean but unknown condition. If I remove my Bestec ATX-250 12E, which is powering the computer just fine, and put this Thermaltake in its place, will it power the computer without causing problems for the motherboard or power supply?

[Phaihn]

Re: thermaltake tr2 430w

I just got a Thermaltake model TP-1500AH5CES, looks very clean but unknown condition. If I remove my Bestec ATX-250 12E, which is powering the computer just fine, and put this Thermaltake in its place, will it power the computer without causing problems for the motherboard or power supply?

what does it look like on the inside?

[everell]

Re: thermaltake tr2 430w

Too late tonight to take it apart and have a picture taking session. Am on my way to bed so I can get up early tomorrow morning. Will post some pictures a little later. Sure is a heavy thing!

[Phaihn]

Re: thermaltake tr2 430w

Too late tonight to take it apart and have a picture taking session. Am on my way to bed so I can get up early tomorrow morning. Will post some pictures a little later. Sure is a heavy thing!

good night

[momaka]

Re: thermaltake tr2 430w

You said that ripple might augment if you increase the capacitance of the secondary capacitors too much... is it the same for the primary capacitors?

No, the ripple on the outputs of the secondary might increase if the ESR (not the capacitance) is increased or descreased too much from the original. Increasing the capacitance will, *in most cases*, decrease the ripple and improve voltage stability.

The primary is a whole different story. There, the primary capacitors are used more as "energy storage units" rather than as noise/ripple suppressors.
This actually foreshadows the answer of your next question.

Also, if the output capacitor's capacitance doesn't determine the power the secondary can output... how is it that it does for the primary (needing a certain uF rating to achieve a certain maximum power output)? ^^;

Like I mentioned above, the primary caps store energy so that there is a fairly constant high voltage source available for the switching transistors to "chop" and "feed" to the transformer. If the primary caps are too small and the transistors start to "demand" to "use" more energy than what the primary caps can supply, they will only be able to do so when the AC line voltage is near its peaks. If this continues further, you will start seeing 50/60 Hz noise on the outputs. At that point, the efficiency usually drops quite a bit.
So ensuring that your PSU has big enough primary caps is important.

The fans are fine, so IDK why the coil burned up.

Failed caps or heavy cross-loading perhaps??

does all that look normal or are there some under voltages?

Motherboard voltage sensors are usually not very accurate. I never take them seriously and always check the voltages by myself with a multimeter.

[Phaihn]

Re: thermaltake tr2 430w

No, the ripple on the outputs of the secondary might increase if the ESR (not the capacitance) is increased or descreased too much from the original. Increasing the capacitance will, *in most cases*, decrease the ripple and improve voltage stability.

The primary is a whole different story. There, the primary capacitors are used more as "energy storage units" rather than as noise/ripple suppressors.
This actually foreshadows the answer of your next question.


Like I mentioned above, the primary caps store energy so that there is a fairly constant high voltage source available for the switching transistors to "chop" and "feed" to the transformer. If the primary caps are too small and the transistors start to "demand" to "use" more energy than what the primary caps can supply, they will only be able to do so when the AC line voltage is near its peaks. If this continues further, you will start seeing 50/60 Hz noise on the outputs. At that point, the efficiency usually drops quite a bit.
So ensuring that your PSU has big enough primary caps is important.


Failed caps or heavy cross-loading perhaps??


Motherboard voltage sensors are usually not very accurate. I never take them seriously and always check the voltages by myself with a multimeter.

i dont have a multimeter yet amongst other tools i need.

[goodpsusearch]

Re: thermaltake tr2 430w

i dont have a multimeter yet amongst other tools i need.

You NEED to buy a multimeter if you are going to do stuff like this.

[everell]

Re: thermaltake tr2 430w

Too late tonight to take it apart and have a picture taking session. Am on my way to bed so I can get up early tomorrow morning. Will post some pictures a little later. Sure is a heavy thing!

Here are some pictures I took tonight. This thing has more cables coming out of it than an octopus!

[Phaihn]

Re: thermaltake tr2 430w

You NEED to buy a multimeter if you are going to do stuff like this.

how much do they cost?

[Phaihn]

Re: thermaltake tr2 430w

Here are some pictures I took tonight. This thing has more cables coming out of it than an octopus!

looks like a decent psu. is that a short psu looks smaller then most for some reason.

[c_hegge]

Re: thermaltake tr2 430w

how much do they cost?

Anywhere between $20 and $1000, depending on what features it has and how acurate it is. Anything can be used to test for shorts, but if you want more accurate voltage readings, then go for something around the $80 mark. I use an ISO-Tech IDM-61, and it does the job nicely.

[Phaihn]

Re: thermaltake tr2 430w

Anywhere between $20 and $1000, depending on what features it has and how acurate it is. Anything can be used to test for shorts, but if you want more accurate voltage readings, then go for something around the $80 mark. I use an ISO-Tech IDM-61, and it does the job nicely.

more then i can afford to spend atm.

[momaka]

Re: thermaltake tr2 430w

how much do they cost?

retiredcaps will probably hate me for saying this, but you can get a cheap 830 variant on ebay, usually around $5 with free shipping. Those cheap 830 multimeters are a little sketchy, but for resistance and low voltage measurements, they would be fine. If you're more serious about electronics, then definitely get something better - preferably auto-ranging (saves a lot of time).

[retiredcaps]

Re: thermaltake tr2 430w

See if you can borrow a multimeter from a friend first before buying which is what I did.