The high voltage is tube rectified (very robust) then goes to a solid state regulator that uses a 2N3439 (I have seen some units use 2N3440) pass element. That part is known to fail with years of use. May be wise to look at that (silver TO39 package) first, might save you a lot of time.
CounterPoint SA3000 Repair Technician
Hi All, I am the proud owner of a counterpoint SA3000 pre amp that is in need of repair it has one of the known issue problems (high voltage regulator fail) and it looks like Mike Elliot is no longer servicing them. Do any of you wonderful audiophiles know of a good tech that works on counterpoint equipment, I live in Bend Oregon, any help would be great, Thanks again.