Tek 2467B@Papy Smurf : Thanks for the BOM ! Only 25 bucks for the whole lot from Mouser... I so wish Mouser (or Digikey) had operations in Europe so I could get the same prices !
Have to make do with Farnell with has less choice and is more expensive. The same BOM will probably cost me 50/100% as much
@TerraOperative : Thanks for the video ! Wow that was an excellent one ! 40 minutes of 2467B goodness, TSP levels of quality !
I learned an awful lot in that video for sure !
Wow you recreated the convoluted front panel flatflex, I am impressed !
I meant to ask you how it costs but I understand you have a partnership with PCBWay so you probably got it for and do'nt even know how much they would have charged ?
Anyway, looks like I will leave that flat flex well alone unless I really need to clean those pots !
... but good to know that if I screw it up anyway, you have the Gerbers ready for me to get a new cable done !
So looks like I have an Mk1 scope then... the CPU board has the Lithium battery + RAM, not the later integrated NVRAM.
My scope is even older than yours.. battery dated December 1988 ! The ASICs on the main board are dated 6+ months prior to that, April/May 1988.
Thanks for the great detail about the battery replacement, I ought to do that before it's too late I guess !
Not touching the flat flex for now, however I still need to pull the front panel regardless, because one of the green status LEDs is kaput IIRC !
Too bad the main board needs to come out to pull the front panel
Looks like most of the misery comes from having to desolder each and every BNC socket eh ? But looks like if approached calmly and one is taking his time, it should not be that difficult/risky of a job. I guess I shall see...
Problem is finding a new LED with the characteristics as the old one ! So that the colour and brightness are identical (enough) to "blend" with the others !
I guess back then there were no high brightness LEDs, so I need to get old school technology LEDs, to begin with. But then need one with the same wavelength and brightness / luminosity !
I will look in the part list, maybe there is a manufacturer part number in there, I could look up the datasheet to find specs and try to find something similar....
If not I guess I will have to buy many different makes and models and try them all to see which one gives the most acceptable result, gonna be time consuming !
I see a lot of electrolytic caps on the main boar as well !
Not touching this board unless proven faulty AND until I have decent soldering gear. Need a powerful iron for this kind of large multi-layer boards, as well as a solder sucker iron gizmo like you have. Not going to risk damaging the board with my old 50 Watt Magnastat Weller...
Thanks again for the video !!!
BLACK WIRE: Oh wow yeah you were right, it's a pass-through for the fan !
Boy fro a distance it's everything but not obvious ! There is not much insulation between the inner and outer par, and the solder and wire strands wrapped around it hid 90% of the insulation, all you could see is a tiny bit of brown stuff (the insulation material..) that I simply mistook / assumed to be some flux residue !
But once desoldered yes, the pass through it perfectly visible and there is no mistaking any more !
The black plastic bracket right next to it is in the way big time, but it takes a couple seconds to remove / unscrew it, then you get much better access for the soldering iron...
Oh, and now I have the PSU freed, I looked more closely at the RIFA caps and sure enough one of them was responsible for all the smoke that escaped the scope('s butt !
Look at that cap !
OK so let's get cracking now !