Farm Engineering

[Vincent]

Knocked up this tool box for the post driver to carry my tools , staples and nails etc in the former hand wash tubs.

 

[Vincent]

⁰0

Making a new wicket door for the shed.

 

[miniconnect]

A project from yesterday, fed up rolling around under the chopper with a jack, blocks of wood and a buckrake toe trying to get the damn thing back on....

Thanks to the guy on the chopper pilots Facebook page for providing the inspiration with his matbro version.

 

[Vincent]

Got the new shed door fitted. Just to paint it now.

 

[Blue.]

A project from yesterday, fed up rolling around under the chopper with a jack, blocks of wood and a buckrake toe trying to get the damn thing back on....

Thanks to the guy on the chopper pilots Facebook page for providing the inspiration with his matbro version.View attachment 855763View attachment 855764

What does the Manitou version look like? ?

 

[miniconnect]

What does the Manitou version look like? [emoji848]

Assume you mean matbro? Pin and cone really, pin and cone headstock must be wider as the Manitou one?
I think this is on a 900 series feed roller set up.

I'd love to credit the guy who I stole this from, but I can't remember his name, and it was posted on Facebook for all to see I suppose.

 

[TripleSix]

I made a couple of these gates for a customers pig shed.

 

[Dave W]

I made a couple of these gates for a customers pig shed.

View attachment 855912

View attachment 855913

I don't know much about Yorkshire engineering but won't the pigs just run round the side of those highly impressive gates?

 

[AJR75]

I don't know much about Yorkshire engineering but won't the pigs just run round the side of those highly impressive gates?

They're hefted to the shed those pigs.

 

[TripleSix]

I don't know much about Yorkshire engineering but won't the pigs just run round the side of those highly impressive gates?

Aka waiting months for builders to arrive!

 

[TechWise]

Something entirely different to resurrect the thread.... A different sort of engineering.

Been working on a control circuit board and started to get errors saying my computer couldn't connect to the board. Happened to touch the processor and discovered it was red hot. Game over for the processor chip but not for the board. The processor is the black chip in the middle, measures about 20mm square. Not much to look at but it has 377 little tiny connections underneath!

The procedure to remove is to soak the whole thing in flux, preheat from below with a heated table and then use a hot air gun from above the melt the solder and ease the chip up. Hey presto, off she comes! Then we take a soldering iron, loads more flux and a copper desoldering wick and draw it across all the pads slowly and carefully to wick away remaining solder and leave only the pads on the ciruit board. A really good scrub with a rubbing alcohol and we're left with this - clean pads ready to receive the new chip.

The real concern is whether all of the pads have survived the process. Each one is about the size of a grain of sand so not easy to tell. Into the microscope!

If all of the pads are as intact as these four we're onto a winner.

Here we see that the blue "solder resist" coating has come away over a small area. Hopefully that won't cause an issue. The new chip has been ordered and will come looking like this, with all the little pads having a ball of solder attached. It gets placed on the circuit board and then the whole thing goes in the oven and if all goes well it melts down into place where the old one was.

 

[shumungus]

I take it you don't have a Hammer drawer in your tool box? That stuff is just a different league.

 

[simon-0116]

Something entirely different to resurrect the thread.... A different sort of engineering.

Been working on a control circuit board and started to get errors saying my computer couldn't connect to the board. Happened to touch the processor and discovered it was red hot. Game over for the processor chip but not for the board. The processor is the black chip in the middle, measures about 20mm square. Not much to look at but it has 377 little tiny connections underneath!
View attachment 862779
The procedure to remove is to soak the whole thing in flux, preheat from below with a heated table and then use a hot air gun from above the melt the solder and ease the chip up. Hey presto, off she comes! Then we take a soldering iron, loads more flux and a copper desoldering wick and draw it across all the pads slowly and carefully to wick away remaining solder and leave only the pads on the ciruit board. A really good scrub with a rubbing alcohol and we're left with this - clean pads ready to receive the new chip.
View attachment 862780
The real concern is whether all of the pads have survived the process. Each one is about the size of a grain of sand so not easy to tell. Into the microscope!

View attachment 862781
If all of the pads are as intact as these four we're onto a winner.
View attachment 862782
Here we see that the blue "solder resist" coating has come away over a small area. Hopefully that won't cause an issue. The new chip has been ordered and will come looking like this, with all the little pads having a ball of solder attached. It gets placed on the circuit board and then the whole thing goes in the oven and if all goes well it melts down into place where the old one was.

Patience, think I'd get stressed. Watched an alarm guy cut into building alarm, solder cables in and remove said alarm with out it going off.

 

[shumungus]

Patience, think I'd get stressed. Watched an alarm guy cut into building alarm, solder cables in and remove said alarm with out it going off.

Useful man in a bank then.

 

[TheTallGuy]

Something entirely different to resurrect the thread.... A different sort of engineering.

Been working on a control circuit board and started to get errors saying my computer couldn't connect to the board. Happened to touch the processor and discovered it was red hot. Game over for the processor chip but not for the board. The processor is the black chip in the middle, measures about 20mm square. Not much to look at but it has 377 little tiny connections underneath!
View attachment 862779
The procedure to remove is to soak the whole thing in flux, preheat from below with a heated table and then use a hot air gun from above the melt the solder and ease the chip up. Hey presto, off she comes! Then we take a soldering iron, loads more flux and a copper desoldering wick and draw it across all the pads slowly and carefully to wick away remaining solder and leave only the pads on the ciruit board. A really good scrub with a rubbing alcohol and we're left with this - clean pads ready to receive the new chip.
View attachment 862780
The real concern is whether all of the pads have survived the process. Each one is about the size of a grain of sand so not easy to tell. Into the microscope!

View attachment 862781
If all of the pads are as intact as these four we're onto a winner.
View attachment 862782
Here we see that the blue "solder resist" coating has come away over a small area. Hopefully that won't cause an issue. The new chip has been ordered and will come looking like this, with all the little pads having a ball of solder attached. It gets placed on the circuit board and then the whole thing goes in the oven and if all goes well it melts down into place where the old one was.

Been there & had the anxious moments in the seconds as it comes up! I've generally found BGA to be slightly less prone to damage compared to the fine pitch QFPs.

 

[seedman stains]

Patience, think I'd get stressed. Watched an alarm guy cut into building alarm, solder cables in and remove said alarm with out it going off.

Did you get away with anything?

 

[aidan]

Something entirely different to resurrect the thread.... A different sort of engineering.

Been working on a control circuit board and started to get errors saying my computer couldn't connect to the board. Happened to touch the processor and discovered it was red hot. Game over for the processor chip but not for the board. The processor is the black chip in the middle, measures about 20mm square. Not much to look at but it has 377 little tiny connections underneath!
View attachment 862779
The procedure to remove is to soak the whole thing in flux, preheat from below with a heated table and then use a hot air gun from above the melt the solder and ease the chip up. Hey presto, off she comes! Then we take a soldering iron, loads more flux and a copper desoldering wick and draw it across all the pads slowly and carefully to wick away remaining solder and leave only the pads on the ciruit board. A really good scrub with a rubbing alcohol and we're left with this - clean pads ready to receive the new chip.
View attachment 862780
The real concern is whether all of the pads have survived the process. Each one is about the size of a grain of sand so not easy to tell. Into the microscope!

View attachment 862781
If all of the pads are as intact as these four we're onto a winner.
View attachment 862782
Here we see that the blue "solder resist" coating has come away over a small area. Hopefully that won't cause an issue. The new chip has been ordered and will come looking like this, with all the little pads having a ball of solder attached. It gets placed on the circuit board and then the whole thing goes in the oven and if all goes well it melts down into place where the old one was.

What is the board used in

 

[TechWise]

I take it you don't have a Hammer drawer in your tool box? That stuff is just a different league.

I can assure you I have many hammers and one of them will be used if the new chip doesn't fix the problem

 

[TechWise]

Been there & had the anxious moments in the seconds as it comes up! I've generally found BGA to be slightly less prone to damage compared to the fine pitch QFPs.

I was actually surprised at how easily it came up compared with some things. I haven't ever tried a QFP. I think the smallest I've gone is TSSOP which is the same pitch I think. I find that loads and loads of flux is the key then just drag a small amount of solder across and it pretty much solders itself.

 

[TechWise]

What is the board used in

It controls an inverter which takes 400Vdc in and produces 3-phase AC out. Originally it will be used for interfacing 400V worth of solar panels with a 110Vac grid. We're also building a low voltage version where to drive a 48V AC motor for an electric vehicle application. This card is the brain of the outfit.