any tips on desoldering the dallas DS12887A from a AOpen AP53 \ VOGONS

any tips on desoldering the dallas DS12887A from a AOpen AP53

Topic actions

First post, by Windows9566

Posted on 2021-01-18, 05:46

Windows9566 Offline

Rank Member

Rank: Member
Posts: 379
Joined: 2015-04-30, 14:55
Location: USA

I have a AOpen AP53 from 1996 with the 430HX chipset, it can support 512 MB RAM max and it has the AMI WinBIOS. too bad the Dallas RTC chip is soldered to the board, I just ordered a 24 pin IC socket to put into the place, the DS12887A still has some juice in it but i still want to put a socket into it. I have a hakko fx-888d soldering station that i use for soldering, im still new to soldering. any tips for desoldering the dallas chip?

R5 5600X, 32 GB RAM, RTX 3060 TI, Win11
P3 600, 256 MB RAM, nVidia Riva TNT2 M64, SB Vibra 16S, Win98
PMMX 200, 128 MB RAM, S3 Virge DX, Yamaha YMF719, Win95
486DX2 66, 32 MB RAM, Trident TGUI9440, ESS ES688F, DOS

Reply 1 of 4, by Warlord

Posted on 2021-01-18, 05:49

Warlord Offline

Rank l33t

Rank: l33t
Posts: 2538
Joined: 2018-02-02, 05:14

Copper braid and flux to soak up to solder. If that wont work for you than you need a hot air.

Reply 2 of 4, by Doornkaat

Posted on 2021-01-18, 08:09

Doornkaat Offline

Rank l33t

Rank: l33t
Posts: 2328
Joined: 2017-04-02, 06:50

Preheat the board with a hair drier. Some of the pins are connected to a large ground plane that wicks away the heat pretty quickly and raising the pcb temperature before soldering really helps.

Reply 3 of 4, by megatron-uk

Posted on 2021-01-18, 08:16

megatron-uk Offline

Rank Oldbie

Rank: Oldbie
Posts: 1823
Joined: 2010-09-07, 10:53
Location: UK

If you're serious about retro computing/gaming or electronics you really should invest in a desoldering station for through-hole removal work - it does away completely with the mess of desolder braid. Probably one of the best purchases I've made in years (well, technically it was a christmas gift from my wife!).

They're not mega-expensive either.

It's one of those tools that you really don't know you need until you try it. Then you wonder how you ever did without one!

My collection database and technical wiki:
https://www.target-earth.net

Reply 4 of 4, by maxtherabbit

Posted on 2021-01-18, 15:22

maxtherabbit Offline

Rank l33t

Rank: l33t
Posts: 3385
Joined: 2018-10-30, 16:36
Location: Richmond, VA

megatron-uk wrote on 2021-01-18, 08:16:

If you're serious about retro computing/gaming or electronics you really should invest in a desoldering station for through-hole removal work - it does away completely with the mess of desolder braid. Probably one of the best purchases I've made in years (well, technically it was a christmas gift from my wife!).

They're not mega-expensive either.

It's one of those tools that you really don't know you need until you try it. Then you wonder how you ever did without one!

this 100%

people need to stop bending over backwards to use the wrong tool for the job here

Go to top of page Go to top of page

Back to General Old Hardware