Looks like megapax/hairong PSUs do explode

[c_hegge]

I've seen a few members saying that megapax/hairong Power supplies won't blow up when overloaded, but just go out without a bang - a lot like Oklahoma Wolf's unit did in the JG bargain basement round up. However, I just stuck a Hairong ATX-430WA unit on the load tester and at just over 300W - Ka-BOOM. I think they must have used hairong switching transistorsfor a 430 Watter

[Th3_uN1Qu3]

Re: Looks like megapax/hairong PSUs do explode

Nah, they must've used hairong secondary diodes which made for very lousy effiency, and hairong heatsinks which failed to move away the heat that the switchers produced as a result.

Also they were probably tightened by a hairong Asian kid. Seen it before in power supplies using TO-220 switching transistors, they're not tight enough against the heatsink which makes them run very hot, the heat melts the plastic insulating washer which makes them separate further from the heatsink, and they go boom.

[c_hegge]

Re: Looks like megapax/hairong PSUs do explode

Or maybe it was really a 200W unit and they used hairong label

In any case, though, methinks it was a combination of tiny heatsinks, inadequate silicon (on both the primary and secondary), and the plastic washers (yes, they had melted when I pulled the cover off).

[everell]

Re: Looks like megapax/hairong PSUs do explode

What??...............no pictures????

[c_hegge]

Re: Looks like megapax/hairong PSUs do explode

Here ya go.

You can see the burn marks near the middle switching transistor

[Th3_uN1Qu3]

Re: Looks like megapax/hairong PSUs do explode

What do we have there, Canicon and JEE? And look, a fuhkyuu too. Looks like the same old platform, just with all the filtering components in place in place of lonely wire links. There's even MOVs in there, nice touch. At least it isn't going to take your computer away with it when it blows.

[Rulycat]

Re: Looks like megapax/hairong PSUs do explode

Canicon: "We can, and we'll get away with it!"

[dumpystig]

Re: Looks like megapax/hairong PSUs do explode

Or maybe it was really a 200W unit and they used hairong label

Haha - brilliant!

[RJARRRPCGP]

Re: Looks like megapax/hairong PSUs do explode

Looks like Canicon and maybe Capxon.

[c_hegge]

Re: Looks like megapax/hairong PSUs do explode

The primary caps are canicon. the rest are all Seacon and CEC-Ecap, with a few small canicons.

[Rulycat]

Re: Looks like megapax/hairong PSUs do explode

Looks like it has hairong heatsinks as well.

[dumpystig]

Re: Looks like megapax/hairong PSUs do explode

[QUOTE=c_hegge;193392]Or maybe it was really a 200W unit and they used hairong label QUOTE]

That's still funny