worst case scenario you will have to desolder the chip, reprogram with a programmer (fiend, hackerspaces, old school places fixing TVs/laptops) and solder again, or buy $1 PLCC32 SMT socket and second AM29F010/W27C010/N28F010/AT28C010 etc and program in using hot swap method

I have programmer, I'd need an adapter for it, my problem is I don't necessarily trust my smt soldering abilities since I'm usually soldering thru hole stuff and have avoided surface mount mostly, Guess I'd have an excuse to by a rework station or a much finer tip for my iron.

sydres wrote on 2026-03-07, 13:01:

much finer tip for my iron.

Dont, its a myth. SMD soldering is all about fluid physics. Chisel/bevel tip + glob of solder + flux. Excess solder will flow towards the tip while big contact surface of the tip ensures proper heat transfer for healthy joint. Its Marangoni effect in action, liquid flows towards regions with higher surface tension.

Interesting! Is it a drag technique?

Any technique, its laws of nature https://en.wikipedia.org/wiki/Surface_tension SMD soldering is imo easier than tht because solder and flux do all the work for you.

Thanks I am familiar with surface tension since my occupation is melting high purity, Ti 3n5 and up to 5n5 purity. Surface tension during casting is of great importance to minimize losses in the post melt machining process. As far as soldering goes my misunderstanding is probably because through soldering always requires significant heat to get the flow and I think my mindset is that I won't get enough heat on smt without damaging parts.

use temp controller soldering iron, learn on scrap

Turns out the switch settings for multiplier were completely wrong. Somehow the settings silk screened on the board and printed in the manual weren't even close. Silk screen settings for 233mhz- on,off,off,on
System wouldn't even post with those settings so I experimented with the switches and found that off,on,on,on got me to 233mhz