New tool, Aoyue 8800! Desoldering just got easy!

[alex987]

Re: New tool, Aoyue 8800! Desoldering just got easy!

I didn't think you were supposed to wet it. I'd tried it once and it seemed to kill the vacuum. Of course, this also has the cracked pump, so it probably didn't have much vacuum to begin with.

I read this in Aoyue 474A+ manual (very strange they forgot to write it in 8800 manual, too).

I hope Aoyue will replace your unit for free. In this case, thumbs up for Aoyue.

[Agent24]

Re: New tool, Aoyue 8800! Desoldering just got easy!

I emailed Aoyue about it. They sent me an email the next day asking for more information. They want the serial number, pictures, and name of the vendor I purchased it from.

That's more than I would have expected. I hope they sort it out.

[lookimback]

Re: New tool, Aoyue 8800! Desoldering just got easy!

I didn't think you were supposed to wet it. I'd tried it once and it seemed to kill the vacuum. Of course, this also has the cracked pump, so it probably didn't have much vacuum to begin with.

I emailed Aoyue about it. They sent me an email the next day asking for more information. They want the serial number, pictures, and name of the vendor I purchased it from. I'll get all of that for them this weekend. It would be great if I could get them to send it for free. I'm definitely going to let them know I've already had to replace the heating element twice.

[alex987]

Re: New tool, Aoyue 8800! Desoldering just got easy!

TIP:
Before starting a desoldering job, ALWAYS wet the yellow filter pad with water, in order to allows efficient air passage and filter action (filter pad must become "soft").
You should repeat this often, if your desoldering session takes too long.

>>If you don't do this, you risk to strain the motor, damaging it<<

[lookimback]

Re: New tool, Aoyue 8800! Desoldering just got easy!

If I well remember, the external power unit carries 220V (for the heating element) and 9V (for the pump), both AC.

You guys have 220v mains though right? We have 120v.

[alex987]

Re: New tool, Aoyue 8800! Desoldering just got easy!

... Unless the 24v is rectified and filtered in the gun...

If I well remember, the external power unit carries 220V (for the heating element) and 9V (for the pump), both AC.

[lookimback]

Re: New tool, Aoyue 8800! Desoldering just got easy!

No wait!
Contact Aoyue support via skype:
http://www.aoyue.com/en/contact/

they have ALL replacements for this unit (not only what you can see on their website!)

Thanks Alex. I'll contact them tomorrow and see if they have it. Although it would have been cool to mod it into a station instead of a portable. Easy too. There's already a port on the bottom of the handle for the vacuum hose, and if the 24v for the motor comes from the power unit (I think they do), it would just be a matter of splicing the motor wires in the unit, and cutting them in the power box to connect to the motor. Unless the 24v is rectified and filtered in the gun, then it would require either making a board to do that, or adding a pair of wires from the gun to the new external pump. Either way, still easy.

[lookimback]

Re: New tool, Aoyue 8800! Desoldering just got easy!

Here's the pics of the pump. I don't have time to do the full tear down like I wanted to.

[alex987]

Re: New tool, Aoyue 8800! Desoldering just got easy!

I got it heating again, but no vacuum. I forgot about the cracked pump housing. Can't find a replacement. Might have to modify it and add an external pump.

No wait!
Contact Aoyue support via skype:
http://www.aoyue.com/en/contact/

they have ALL replacements for this unit (not only what you can see on their website!)

[lookimback]

Re: New tool, Aoyue 8800! Desoldering just got easy!

I'll do a teardown this weekend and post pics.

[stj]

Re: New tool, Aoyue 8800! Desoldering just got easy!

can you post a foto?
btw if this the the clone type with a pump in the base, i'v seen spare pumps sold cheap.

[lookimback]

Re: New tool, Aoyue 8800! Desoldering just got easy!

I tried using silicone adhesive. It might work. Too bad I don't have a 3D printer. The thing that really pisses me off about this is that the typical repair parts which a person might need are not available. I'm still going to buy the Hakko one, but right now I have other obligations. I'll coat the entire thing in silicone if I have to.

[stj]

Re: New tool, Aoyue 8800! Desoldering just got easy!

patch the housing with rubber compound - you have nothing to lose trying.

[lookimback]

Re: New tool, Aoyue 8800! Desoldering just got easy!

I got it heating again, but no vacuum. I forgot about the cracked pump housing. Can't find a replacement. Might have to modify it and add an external pump.

[tibimakai]

Re: New tool, Aoyue 8800! Desoldering just got easy!

Maybe there is no sensor circuitry at all. (like in the fake phones, the software is there though, to show changing numbers)

[alex987]

Re: New tool, Aoyue 8800! Desoldering just got easy!

Mine is still working...

[lookimback]

Re: New tool, Aoyue 8800! Desoldering just got easy!

Decided to fix this one more time. I'm going to turn the temp down to 350°C and see if it will last. It's obviously a terrible design if you can turn it up so high that the element will burn out. I'm wondering if they screwed up on the sensor circuit and it's not reading right. I should probably get a tip temp tester and then, if it isn't reading accurately, I could probably modify it.

[lookimback]

Re: New tool, Aoyue 8800! Desoldering just got easy!

It was set that high when I got it, I never really thought about it. I keep my iron set to about 365, I don't know why I never thought to turn it down.

[alex987]

Re: New tool, Aoyue 8800! Desoldering just got easy!

And prior to last night, I'd only used it for a few minutes on a couple occasions. I had the temp on 480°C, I wonder if It's over powering the element?

I took the risk and I bought one (220V version).
It works fine; no complaint to date.
I set the temperature to 350C.

Maybe is 480C too high temperature?
Why did you use this high temp? (in my opinion, 350C is good for both single and double layer pcbs)

[tom66]

Re: New tool, Aoyue 8800! Desoldering just got easy!

And prior to last night, I'd only used it for a few minutes on a couple occasions. I had the temp on 480°C, I wonder if It's over powering the element?

480C is way too hot anyway... on my old 968 it would make the element glow bright orange.
I would use 360-400C for hot air. Maybe that'll make it last a little longer.