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| Rigol MSO5000 Power Supply |
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| Protegimus:
and PSU PCB with partial component overlay. Required components list is small for the MSO5000 (full details in the BoM) 11x 1000uF 16V low ESR, e.g. Panasonic FM/FC/FR suitable 4x 470uF 16V for these I selected KEMET A750KS477M1CDAE013 aluminium organic polymer capacitors (recommended by someone that has completed recap on other Rigol models) plus the additional TDK EPCOS metal film 0.1 & 0.01uF bypass capacitors if you wish. C1 is already Rubycon CXW 150uF 450v and C4 Rubycon YXJ 47uF 50v so nothing to be done there. I also bypassed C1. |
| Protegimus:
CrapXons removed and replaced. I gunked them up again as per OEM to prevent vibration. Will do the remaining caps once I receive inventory. Can anyone identify U4 & U11 marked L2107? I have lots more images if anyone is interested. |
| Sighound36:
This is an excerise I performed on the MSO 8000 & RSA5065 about three years ago they use the same SMPS unit. Definiately a worthwhile excerise especially on the spectrum analyser, I also went further a few months later, however I didn't change take any further images sorry about. |
| ballsystemlord:
--- Quote from: Protegimus on July 07, 2023, 07:29:31 am ---and PSU PCB with partial component overlay. Required components list is small for the MSO5000 (full details in the BoM) 11x 1000uF 16V low ESR, e.g. Panasonic FM/FC/FR suitable 4x 470uF 16V for these I selected KEMET A750KS477M1CDAE013 aluminium organic polymer capacitors (recommended by someone that has completed recap on other Rigol models) --- End quote --- I only count 9 1000uf in the BOM. Which is it? Also, the originals don't appear to be low ESR. Is there someone who tested and found that low ESR caps work better or is this more because you can? --- Quote from: Protegimus on July 07, 2023, 07:29:31 am ---plus the additional TDK EPCOS metal film 0.1 & 0.01uF bypass capacitors if you wish. --- End quote --- Why bypass capacitors? Maybe you've read someone else's work that goes into detail on these matters which you could link? Thanks! PS: I'm asking because I own an MSO5000. |
| ballsystemlord:
Even more interesting, why bother replacing all those capacitors if you could just place a few on the output stage to filter the PSUs natural noise level? |
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