I have a palstar 30 amp psu which is causing me a lot of trouble . the current warning light goes on and off , I have stripped it down today (taken covers off) and sprayed with servisol , my question is why is the light coming on all the time and spoiling many good qso's by cutting out . I use a yaesu 757gx MK2 which uses about 19 amps at 100w output . HELP (or do i have to buy a new one )