ASUS RT-N66U Teapo replaced

[WeaselXP]

So, I had more than a couple of ASUS routers die on me (3). I hadn't picked up the flux and iron for years or I might have had the sense to fix them. I decided to try it out BEFORE I had problems with my current router. Replaced a Teapo 470uf 25v A3 series maincap with a Rubycon ZLJ series. The through holes seemed really tight and I had to switch to a small nozzle on the desoldering gun. When I put it back together and plugged it in, nothing happened...for two minutes, no lights, no pop , no nothing. Scared the mess out of me. It finally rebooted and is working.This doesn't void my warranty, right? (LOL)

[mockingbird]

Re: ASUS RT-N66U Teapo replaced

It's also worthwhile to re-cap the AC adapter. I've done it on quite a few D-Link ones.

[WeaselXP]

Re: ASUS RT-N66U Teapo replaced

Great idea, are they hard to get apart?

[mockingbird]

Re: ASUS RT-N66U Teapo replaced

Depends on the style.

D-Link 5V 2.5A adapters need to be pried open with force, but Linksys 12V 1A/500mA grey/black adapters are only held together by ordinary glue and can be pried apart by hand.

I don't know about the Asus ones.

[WeaselXP]

Re: ASUS RT-N66U Teapo replaced

Force? Time to break out the Dremel. Won't come open at all.

[WeaselXP]

Re: ASUS RT-N66U Teapo replaced

Got it open, has a 47uf 400V and 680uf 35v. Both are Taicon, which is supposed to be a reasonably good brand. Might just leave it.

[WeaselXP]

Re: ASUS RT-N66U Teapo replaced

NVM, I will replace them.

[stj]

Re: ASUS RT-N66U Teapo replaced

dont worry about the 400v one - mains caps arent stressed.

[WeaselXP]

Re: ASUS RT-N66U Teapo replaced

Very little room in the adapter.

[stj]

Re: ASUS RT-N66U Teapo replaced

i would not be surprised if there is a small cap on the lower-right under that glue.
there is probably a startup-cap someplace.

[WeaselXP]

Re: ASUS RT-N66U Teapo replaced

I am too lazy to remove all that glue. Used a Rubycon ZLJ and one of the UCC PAG series, which was the only one that actually fit the PCB footprint.Maybe the start-up cap is an SMD on the other side?

[Agent24]

Re: ASUS RT-N66U Teapo replaced

Those tiny SMPS adapters are horrible. Run hot, welded shut, no schematics and full of unmarked SMDs.

Give me a linear one any day!

[mockingbird]

Re: ASUS RT-N66U Teapo replaced

I am too lazy to remove all that glue. Used a Rubycon ZLJ and one of the UCC PAG series, which was the only one that actually fit the PCB footprint.Maybe the start-up cap is an SMD on the other side?

Dig through that glue... It's there.

[nkeck72]

Re: ASUS RT-N66U Teapo replaced

I would be very surprised if the startup cap isn't under all that shmoo.

[WeaselXP]

Re: ASUS RT-N66U Teapo replaced

If there is a start up cap there, it's not a electrolytic can type.