Topic: ATL 1500 - failing when been running for a while
Not been here for a while so hi!
I know there are some electronics wizards here so though this may be a good place to ask about this...
My ATL died yesterday part way through the third consecutive batch - normally I only ever do 1 process run at a time but was catching up with som 120 I'd shot in France.
Turning on and off it would start then slow down and stop again, all lights dieing and the buzzer sounding and strangling out.
Leave it longer and it would appear to go back to normal - for a few minutes.
It's an old machine, 80's/90's tech - logic chips, caps, resistor, diodes etc on a circuit board, with some early IC's.
My thinking was that something is probably heating up and going out of tolerance, a dry joint maybe, so I popped it open for a look...
There's some obvious discoloration in the next photo
Flipping the board showed this ceramic resistor...
Which I think is a 3.3ohm 5W type...
Does this look like a typical pre/part-failure, if so would something downstream be causing it? Or is it just cooked lacquer from over the years?
The machine would be about £1500 to replace and spares are like rocking horse poo so would rather repair if possible... I was planning to refresh any suspect looking solder joints and swap out that component for a modern replacement.