FSP200-60ATV. Worth repairing?

[Scorpent]

G Day,
Recently I got this PSU from a friend of mine. When I received it, it was fully functional, voltages within spec.As time passed, it's been acting up funny like turning off randomly or refusing to turn on. Now, it wont turn on at all. If you short the green to black quickly will will make the fan turn or receive power less than 1 sec. STBY voltage is normal at 5V. So what you guys think? Capacitors screwing up?(no bulged caps) Screwed IC? If i'm missing any info, feel free to ask me.

I only have basic tools for repairing and my soldering skills ain't best.

Thanks in advance.

[R_J]

Re: FSP200-60ATV. Worth repairing?

Is it worth repairing, Not really, You can usually find higher wattage units for free, but if you are going to try and repair it you might try checking some of the small low value caps in the primary circuit, they are usually around 4.7-22 uf and around 50v, they can go bad and won't bulge, and cause the main power supply not to start up.

[everell]

Re: FSP200-60ATV. Worth repairing?

I am of the opposite opinion. This is why. This power supply has a good input filter - most cheap power supplies don't. This power supply has pi filters on the output. Much better than the cheap power supplies. This power supply has a large switching transformer for a 200 watt power supply. It should hold its power with little ripple. If you decide to fix it, here is a hand drawn schematic of the pwm circuitry.

If you decide to fix it, it will out perform many of the cheap power supplies, such as the IMicro 400 watt bargain basement power supplies. Buying one of these cheap power supplies for a replacement is only asking for trouble.

[Scorpent]

Re: FSP200-60ATV. Worth repairing?

Sorry guys, almost forgot, that resistor(see pic) heats up quite toasty if it runs.

[delaware74b]

Re: FSP200-60ATV. Worth repairing?

IF you do decide to recap, get rid of that yellow glue as it turns conductive when heated. The glue around that resistor is starting to turn brown (=conductive).

[momaka]

Re: FSP200-60ATV. Worth repairing?

Worth repairing?
- That depends on how valuable your time is. Overall, though, I would say that it is worth repairing, especially if you want to learn or get better with repair. Moreover, everell is completely right here: don't judge this PSU by its power rating. Just because it is only a 200 Watt power supply doesn't mean it is wimpy. I've seen "higher-rated output" power supplies that aren't really much better than this, especially the really cheap ones (which are actually often much worse).

The label on this power supply states it can do 10 A on the 12 V rail. This should be enough for a somewhat modern, basic PC with a single HDD, onboard video/audio, and a low-power processor - something such as Core 2 Duo with less than 70 Watts TDP. It should also work okay with socket 462 Athlon XP/MP and Duron/Sempron. DO NOT use with Pentium 4 or Pentium D.

Now, as far as the problems you are having with this PSU, there are several things that could have gone wrong: an output rectifier can be shorted, bad output caps, or some of the small caps around the logic circuitry are bad.

Start by checking the output rectifiers. You will need a multimeter for this. Set to the lowest resistance scale (usually 200 Ohms for manual multimeters) and measure the resistance between each of these:
orange wire and ground (black wire)
red wire and ground
yellow wire and ground

Let me know what you get. "Dummy" load resistors can affect those readings above into making us think that something is shorted on the output, be we can weed those out. The hot resistor which you pointed to is likely one of those "dummy" load resistors.

Also, if you can post more pictures of the secondary side and its caps (the side with the output wires) as well as a picture of the solder-side of the PSU, that would tremendously help with the troubleshooting process.

The fact that you have 5 V standby already brings some hope for this PSU.

[stj]

Re: FSP200-60ATV. Worth repairing?

old FSP supply's are really good.
although i'v never seen one under 300w before.
i refuse to believe those are the original output caps btw, they always blew the tops open on the teapo's pretty fast.

[Scorpent]

Re: FSP200-60ATV. Worth repairing?

Worth repairing?
- That depends on how valuable your time is. Overall, though, I would say that it is worth repairing, especially if you want to learn or get better with repair. Moreover, everell is completely right here: don't judge this PSU by its power rating. Just because it is only a 200 Watt power supply doesn't mean it is wimpy. I've seen "higher-rated output" power supplies that aren't really much better than this, especially the really cheap ones (which are actually often much worse).

The label on this power supply states it can do 10 A on the 12 V rail. This should be enough for a somewhat modern, basic PC with a single HDD, onboard video/audio, and a low-power processor - something such as Core 2 Duo with less than 70 Watts TDP. It should also work okay with socket 462 Athlon XP/MP and Duron/Sempron. DO NOT use with Pentium 4 or Pentium D.

Now, as far as the problems you are having with this PSU, there are several things that could have gone wrong: an output rectifier can be shorted, bad output caps, or some of the small caps around the logic circuitry are bad.

Start by checking the output rectifiers. You will need a multimeter for this. Set to the lowest resistance scale (usually 200 Ohms for manual multimeters) and measure the resistance between each of these:
orange wire and ground (black wire)
red wire and ground
yellow wire and ground

Let me know what you get. "Dummy" load resistors can affect those readings above into making us think that something is shorted on the output, be we can weed those out. The hot resistor which you pointed to is likely one of those "dummy" load resistors.

Also, if you can post more pictures of the secondary side and its caps (the side with the output wires) as well as a picture of the solder-side of the PSU, that would tremendously help with the troubleshooting process.

The fact that you have 5 V standby already brings some hope for this PSU.

Okay thanks momaka, Here's my findings:

Ground to:

Orange(3.3v) 8Ω
Red(5v) 15Ω
Yellow(12v) Around 92Ω-95Ω

My cheap multimeter doesn't give a too accurate result so accuracy at about +-5Ω

Pictures are attached. The bodged wire was not done by me or my friend.

[Scorpent]

Re: FSP200-60ATV. Worth repairing?

old FSP supply's are really good.
although i'v never seen one under 300w before.
i refuse to believe those are the original output caps btw, they always blew the tops open on the teapo's pretty fast.

Fact : Brand new from the factory. Never replaced. I guess Teapos were once an okay capacitor or just plain luck. (So far, I have seen no blown Teapos.)

[stj]

Re: FSP200-60ATV. Worth repairing?

luck.

[Per Hansson]

Re: FSP200-60ATV. Worth repairing?

Teapos often do fine in power supplies if the cooling is ok and they are not subjected to too much ripple due to the design.

If you do decide to fix it just a small warning: probably it has no overheat protection like my old NX-3000 PSU which seems to be pretty much the same PSU.
So some kind of monitoring of the fans RPM or circuit that simply cuts the "power ok" signal if it becomes too hot would be good.

See here what happens otherwise when you fix a perfectly good PSU and the fan control PCB decides to die a few months later:
https://www.badcaps.net/forum/showth...=5050#post5050

[momaka]

Re: FSP200-60ATV. Worth repairing?

Pictures are attached. The bodged wire was not done by me or my friend.

Well, the pictures still aren't very clear. But I guess it doesn't matter. I can see that there are several dummy load resistors wrapped in black sleeves, and that's probably why the resistance readings you got are a bit low. But nothing too out of the ordinary. So the only thing I can tell you at this point is that you should probably just recap the entire PSU first - every single electrolytic capacitor except for the two big 200V ones on the primary side.

If that doesn't fix it, then we dig in deeper. Of course, if you think it is worth it.

[Scorpent]

Re: FSP200-60ATV. Worth repairing?

Well, the pictures still aren't very clear. But I guess it doesn't matter. I can see that there are several dummy load resistors wrapped in black sleeves, and that's probably why the resistance readings you got are a bit low. But nothing too out of the ordinary. So the only thing I can tell you at this point is that you should probably just recap the entire PSU first - every single electrolytic capacitor except for the two big 200V ones on the primary side.

If that doesn't fix it, then we dig in deeper. Of course, if you think it is worth it.

Hmm, in that respect, I may scrap it as I don't have enough cash or time to recap the whole thing. Thanks anyway. What do you suggest to take from the psu?

[Scorpent]

Re: FSP200-60ATV. Worth repairing?

Teapos often do fine in power supplies if the cooling is ok and they are not subjected to too much ripple due to the design.

If you do decide to fix it just a small warning: probably it has no overheat protection like my old NX-3000 PSU which seems to be pretty much the same PSU.
So some kind of monitoring of the fans RPM or circuit that simply cuts the "power ok" signal if it becomes too hot would be good.

See here what happens otherwise when you fix a perfectly good PSU and the fan control PCB decides to die a few months later:
https://www.badcaps.net/forum/showth...=5050#post5050

There was a thermometer for fan control, but it runs too slow to even move a decent amount of air.

[momaka]

Re: FSP200-60ATV. Worth repairing?

Hmm, in that respect, I may scrap it as I don't have enough cash or time to recap the whole thing. Thanks anyway. What do you suggest to take from the psu?

Keep it for parts. Maybe eventually you'll find a bad PSU or other electronic device that has good caps and can then fix this PSU. Or alternatively, you might find use for some of the parts in this PSU to fix other electronics. I had a really and cheap nasty PSU that I kept for parts. And even with that, I was able to fix more than 5 other items with it (3 of them being other proprietary or good quality power supplies).