Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me.
Warpspeed Guru Joined: 09/08/2007 Location: AustraliaPosts: 4406
Posted: 11:11pm 28 Nov 2017
Copy link to clipboard
Print this post
Almost anything works, from silicone sealer to the wife's nail polish. The very few times I need to do this, I can usually scrounge something.Cheers, Tony.
djuqa Guru Joined: 23/11/2011 Location: AustraliaPosts: 447
Posted: 11:41pm 28 Nov 2017
Copy link to clipboard
Print this post
Another thing that worked for me. I got the MONGREL 44pin PIC32 and Crushed it between the jaws of my pliers. "Fixed" it permanently. Only Pre-SOLDERED/ Assembled / Working / Cheap development/Project boards from now on. I don't have the time, patience, desire, motivation to bother with something when a pre-made, cheap, ARDUINO board is available for a few bucks. I have ordered 2 explore28 pre-assembled from Richtech, not their Explore64 kit which is not even pre-programmed with MMbasic (my 2 SiliconChip kits were). MMbasic is good (I have 13 DuinoMites & Maximites),but C++/C via the Arduino IDE is just as OK to program.
Edited by djuqa 2017-11-30VK4MU MicroController Units
Warpspeed Guru Joined: 09/08/2007 Location: AustraliaPosts: 4406
Posted: 01:09am 29 Nov 2017
Copy link to clipboard
Print this post
[quote]I got the MONGREL 44pin PIC32 and Crushed it between the jaws of my pliers. "Fixed" it permanently.[/quote] All those little bent and broken binary 0's and 1's in there, never to be programmed again.Cheers, Tony.
djuqa Guru Joined: 23/11/2011 Location: AustraliaPosts: 447
Posted: 02:05am 29 Nov 2017
Copy link to clipboard
Print this post
The magic smoke had already left the building so the binary electrons would have starved anyway. VK4MU MicroController Units
Azure Guru Joined: 09/11/2017 Location: AustraliaPosts: 446
Posted: 02:14am 29 Nov 2017
Copy link to clipboard
Print this post
Are (were) they MM+ 64 LCD Backpacks or Explorer 64 PCB's?
djuqa Guru Joined: 23/11/2011 Location: AustraliaPosts: 447
Posted: 02:17am 29 Nov 2017
Copy link to clipboard
Print this post
the explore64 kits from SiliconChip (Rob Rozee design) VK4MU MicroController Units
redrok Senior Member Joined: 15/09/2014 Location: United StatesPosts: 209
Posted: 04:24am 29 Nov 2017
Copy link to clipboard
Print this post
AzureThat stuff was essentially a type of RTV that contained a high percentage of solvent. A small dot of the stuff was placed under the chip along with the solder paste.
After the solvent evaporated the dot shrank in size causing tension and pulled the chip down. When the board went into the reheat oven the solder paste melted and the leads, now under tension, squeezed the solder connection together. That system was flawless.
There is no way I can hold a smd and solder it so I made up the device in the photo. I roughly position the device under the pin, clamp it slightly , then position it accurately. I fully clamp it using the pcb holder screw which I leave about a quarter turn from fully tight. Clamping with the screw alone rotates the device out of position. I put the point of the iron on the pin of the smd and then use RC solder applied directly to the pin. It works quite well.
Boppa Guru Joined: 08/11/2016 Location: AustraliaPosts: 816
Posted: 11:09am 01 Dec 2017
Copy link to clipboard
Print this post
I used to both make and repair smd pcbs for use in the mining industry, for single component use (replacing or first use) I just put flux on the pads, a tiny dab of superglue applied with a pin to the body of the component and place in position, then solder You sometimes got a bit of a whiff of melting superglue, but as I was working with extractors, didnt particularly care much (a good fan blowing across the pcb and away from you will work just as well)
Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me.
Print this post
