My SONY STRDB925 stopped & emitted a puff of blue smoke. It's 4 years old & I paid £500 for it . Should I try & get it repaired or buy something new. I have a 4 YEAR OLD SONY DVPS715 DVD/CD player, MISSION 735i front speakers, MISSION 70C2 centre speaker and KENWOOD RS550 rears. Money is of course a little short right now and I would appreciate some advice to get the best solution. thanks in anticipation!