Philips 42pf5321D/37 problem in Mexico

When I turned my set on I heard a pop, could smell something electrical and the light blinks red 6 times repeatedly whenever I turned it on after a few seconds of green initially.  I took it to the local Mexican TV repair shop in Playa del Carmen.  I was told that all 4 circuit boards were bad and I should just buy another TV.  I took the back off and I could see that the main power board had been checked because he did not reconnect all the wires.  Is it possible to diagnose the other boards when the main power board is out?  I gather from reading other posts that the 6 blinks indicate a problem with the power supply.  I can detect an odor on the large capacitors but they look flat.   The set is too big to take back to the states.  Can the boards be tested if I take them out?  My initial thought was that I would try replacing the power board but would like to hear any qualified opinions.