This has already been discussed several times.
Those three caps should be replaced, but 105c (temp) should be the replacement caps. Do not use 85c (that's what the originals are). The 85c caps are not good for switching power supply rails, therefore they flake out. The lower temp caps were used in the supplies, and later it was found that they were not good for SMPS rails.
It's OK to go higher capacitance, but there's no reason to go with boutique caps. When going higher it would be a good idea to not go too high, because the SMPS will delay in firing up (click several times), It may see the added capacitance as a load and try try to shut down.
- 100mf @ 160 vdc / 105c
- 100mf @ 250 vdc / 105c
- 150mf @ 160 vdc / 105c
The 100mf @ 259 vdc / 105c seems to be the best way to go, because it keeps the same load on the supply. And the higher voltage rating seems to do the same thing that would be expected from going higher capacitance.
The +85 volt rail also supplies the deflection sweep circuit drive (power mosfets), so that may explain why there's two of them on that rail. While both -85 and +85 are the supply for the neck boards
While you're at it. Also replace C50 (220mf @ 160vdc) on the HDM. And if you can, replace it with a 220mf @ 260 vdc 105c
If C50 leaks, it will not only cause width and unstable width problems, it can cause the heatsink to run hotter, as well as dump sweep noise on the +85 rail into the neck boards.
Stay away from boutique caps. Simply making sure the caps you use are 105c is all that needs to happen in these circuits.
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