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Surplex is definitely pushing things forward when it comes to online auctioning but a warning regarding individual auctions - they are sometimes handled by their customers who use Surplex (and other) platform to advertise their auction, I'll mention one with which I had a very unpleasant...

if that display is like on my machine, then the 2 digit red 7 segment display is showing which tool number is currently programmed in TNC, and the bar is showing spindle motor load, that one may go to full when you start/stop the spindle, depending on how acceleration/deceleration values are set...

ah, ok, I for some reason imagined yours is the latter one with the integrated electrical cabinet the wiring isn't too complicated, and the wires are all marked, so rewiring isn't such a big issue, I plan to keep the back plane as it is in the new tall cabinet (that means less rewiring), and...

Could you please take a few pictures of the layout of the electrical cabinet on your machine? I guess it is bolted to the base, right? What does the inside structure going up and front look like from inside? I want to eventually get rid of the separate electrical cabinet on mine and integrate...

good luck with that, I'd get one of those 4000/7400 IC testers from ebay or make one using an arduino, ready made sketches are already out there, manually testing each IC for correct operation would be very tedious even with full schematic I decided to replace them all after finding couple bad...

looks like you have quite a "project" there... the problem I had with my drive was that the transformer on the bottom board shorted out injecting 220V AC into the +/-15V power supply circuit for the ICs, I ended up replacing all of them, it was couple years ago and I remember having problems...

What sort of drive is for the spindle motor on yours?

the head is clamped on the column, I'm not sure if it is the hydraulic pressure or a spring stack that is doing the holding, but there must be a solenoid there somewhere to release the clamping to allow the head to move

if you kept the resistor names, then you can take a look at my schematic shared previously, I started cleaning it up and added resistor values also

Desoldering station is this one - https://www.tme.eu/en/details/sp-1010dr/desoldering-stations/solder-peak/ , it is a bit fiddly, had to adjust fit of the collector cylinder on the gun so it is easier to remove for cleaning, and there is a tendency for a plug to form from the solder sticking at...

I uploaded more photos to the google drive folder, I also made a quick schematic and pcb layout using easyeda, capacitor, transistor, thyristor and varistor names are correct, so are the transformers, but resistors must be identified from the photos shcematic needs more work to make it...

this particular one is a bit more complex than the others, here are couple pics, full resolution ones are on the google drive link here: more and full res pics unfortunately I don't have the electrical diagrams for mine, so can't tell you what it does, those are T1C263N triacs on the output if...

it is true for drives designed to controlled by +/- 10V signal and nothing else, but this drive is different, it seems to need direction signal (those K31 and K32 contactors) and speed (the circuit where R1 and TNC pins 8 and 9 are involved), and then there are couple more inputs there whos...

It looks like there was nothing wrong with this TNC, and it looks like it is supposed to work like Ross explained the Acktive Deckel ones, you have to manually tell it which will be the direction for feed first and then activate the appropriate + or - feed distance on TNC, if the manual...

oh dear god, did you just call tachogenerator a tachometer? and chips? potatoes or integrated circuits, be clear, please

one more question - when you use the joystick on the panel to feed the axis, does it move in both directions or just the negative direction only, like from the TNC? there is no feed reverse clutch/gear, feed motor is DC and driven by the thyristor drive on page 111, I see the TNC pins 8 (0V)...

I'm lost about that circuit shown in page 15, that is why I asked about the make/model to try and find diagram for it, but it sounds like it is using clutches to select which axis is moving and I just rewatched it and realized something I overlooked the first time - when he is reversing the...

those caps don't look too bad (at least according to how and with what you're measuring them), and Bruce previously mentioned that on these types of power supplies with linear voltage regulators caps aren't usually at fault, caps fail in switch mode power supplies and if there were problems...

dc voltages seem more or less ok, but I'm thinking about how he measured AC on 4,5; 10,11 and 20,21, multimeter should be on AC and measure between 4 and 5, not to ground

jesus christ how touchy we are, if you had the experience, you'd understand what I meant with "encoder", for the servo drive logic it doesn't matter if it is optical, magnetic or mechanical - it gets converted to voltage that is used then by opamp comparators, if that signal is intermittently...