The power button only turns on the unit intermitantly
SOURCE: yamaha dsp-/e300 wont switch on
no display at all in your front panel?
you said power supply is ok... all voltages...
i remember DSPE300, small power amp only IC. can you check your +/- main power supply if ok it should be around +/- 35V. If it's there then place your meter neg to speaker ground, the + to red and try to run on the unit. see if you'lll get a pulse in AC meter mode. Or a DC voltage in DC mode.
then check also your secondary supply that's about +/- 15volts. Your standby voltage for the CPU to work is 5V. please check that as well
If the trouble is main amp, you should still have a display screen. Unless it is a total breakdown and main out totally shorted, it really wont turn on but you said you seem to find voltage.
reden
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