Why are you replacing them?
The oscilloscope had several problems, both on the display and on the acquisition side. A few topics here discussing the model addressed the second area replacing 32 o 36 SMD electrolytic caps in one board. I did that last week and apparently helped, as I was able to glimpse son signals were before there was only white noise.
All the guys on those threads also went straightforward to replace all the axial caps. I assume everyone knows better than me, so I thought that would be the way to go. Just to be sure I tested ESR and it was really high in 90% of the caps.
In the area of the mains voltages I only changed 3 RIFAs that were scary and a few other low-voltage rated axials that had very high resistance, just in case that could be the reason for the issues in the CRT, as one of the boards has the flyback. (it didn´t solve the issue)
I wouldn't mess with them unless you have good reason to suspect one. A box full of cheap caps of unknown specs are not necessarily an improvement over 30+ year old vintage ones.
I am afraid you're absolutely right, looking at the results
If you’re replacing them, why not replace them with… drumroll please… axial caps? Several manufacturers still make them. In fact, that’s a Philips scope, so made with Philips caps, which are now Vishay, so you should be able to get something very similar to the original.
I'm a cheap bastard. ;P
Longest story: I have little budget to drop here and I felt since the beginning I was quite unlikely to succeed in the repair, as I have almost no idea what I'm doing. Not as bad as electrocuting myself, but this thing is way too complex for my current or future skill level.
I had the box of caps here, so I thought just dropping them in place (after checking values) could do the trick.
It wasn´t aimed to be a final repair. I was hoping to reach if not a working device, at least a "good enough to hope is completely fixable" state, so I could eventually put together the money to get the proper parts and do a fine job. Time is the thing I have to spare right now, so doing everything again doesn´t bother me.
I wasn´t going to really use it anyway. I recently put all my savings in the cheapest Hantek so this is just a long term project. I just wanted (and still want) to see it working. Hopefully, I wouldn´t have done any serious damage.