Need Repair Work: Replace PCM3060

General discussion and support for the Peaberry SDR V2.

Need Repair Work: Replace PCM3060

Postby k1qn » Mon Jun 29, 2015 11:55 am

I'm willing to bet my PCM3060 is either bad, or I traumatized it, and I need to have it replaced. I don't want to fool with this myself. I'd have to buy the heatgun, and gamble I could do it right without burning my house down.

I observed all ESD precautions, and this is my 4th SDR kit (2 Softrock Ensemble RXTX's, and another Peaberry). In 50 years of homebrew and kit work, this is the first time I've needed outside help. :-(

That said ... this is a great kit! I may build a third one some day.
Al Gerheim, K1QN
Celebrating 50 years in ham radio!
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Re: Need Repair Work: Replace PCM3060

Postby ks1h » Mon Jun 29, 2015 10:48 pm

I thought my pcm3060 was bad and bought one of the $50 heat guns off eBay and it worked fine. Used it several times on other chips that I thought were bad. Never mind that all of the problems turned out to be elsewhere (USB drivers, etc). They are pretty useful tools.

73, Ken ks1h
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Re: Need Repair Work: Replace PCM3060

Postby k1qn » Tue Jun 30, 2015 12:33 pm

Can you recommend a specific gun? I'd be willing to pay bust-out retail. :-)

I pride myself on being good with solder, but lifting that SOB isn't safe with my current equipment.
Al Gerheim, K1QN
Celebrating 50 years in ham radio!
k1qn
 
Posts: 90
Joined: Sun Oct 20, 2013 9:42 pm

Re: Need Repair Work: Replace PCM3060

Postby ks1h » Tue Jun 30, 2015 9:13 pm

It's not a recommendation but here's the one I bought (now down to $41 including shipping):
http://www.ebay.com/itm/858D-110V-Hot-A ... 3ce1d2b9c1

I used the small nozzle.

73, Ken ks1h
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Re: Need Repair Work: Replace PCM3060

Postby k1qn » Tue Jun 30, 2015 11:33 pm

Behold!

https://www.youtube.com/watch?v=tlSY1uaw0GA

It works like magic. All the pads are clean and intact. I deleted the first 2 steps: flux, and over-solder. I had already wicked it dry, in hopes that it would just fall off.

The 30 gauge wire from the kit slides under the pads.

Now all I need is a new PCM3060.
Al Gerheim, K1QN
Celebrating 50 years in ham radio!
k1qn
 
Posts: 90
Joined: Sun Oct 20, 2013 9:42 pm


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