I’ve had my T102 open yesterday, the most recently replace caps were 54 and 55, and they are now still looking good. I did do some tests without display or keyboard connected. When I power on without either there was not a single noise to be heard. However, when I connect the display it comes back. I also found that the noise seems to come from the area of the low-power led, which is still always on even when connected to the AC adapter, so it would seem something might be up with the power supply to the display… The display does seem to work perfectly fine.
Cheers, Erik PS: I also just gotten my hands on a pretty decent M100. This one seems to work fine as well, except for the P and [ ] keys. I also found some pretty crispy caps in there, so I’ll definitely have to recap it. > On 16 Jun 2020, at 13:31, Stephen Adolph <twospru...@gmail.com> wrote: > > That's interesting! > Could be that one of the caps you replaced on the +5V line is now > microphonic, or the transformer caps. > Which ones did you replace? > It would be interesting to see if you can isolate it. If you had some > alternative caps that you could try for the 3 you have changed, you could try > changing one at a time. > > > On Tue, Jun 16, 2020 at 2:59 AM Erik van der Tier <e...@vdtier.nl > <mailto:e...@vdtier.nl>> wrote: > Hi All, > > I’ve had to replace 3 caps on my trusty T102 as they were leaking (nasty as > they were fairly recent replacements). The surgery seemed to have worked, > except for increase noise. It’s the kind of noise where you can hear the > processing of the CPU, more when its busy and it seems to have clear > ‘structure’ to it in relation to what the T102 is doing. > Is this a sign that the same or other caps are not ok? Does anyone have > experience with this. I really want to get this capacitor business over with > for once and at least a bunch of years (I’m having too much fun with the t102 > to let it just die). > Any thoughts on how to fix this? > > Cheers, > Erik
