I have a yamaha equalizer (EQ-630) with no display. I have the service manual and have gone through every voltage test point from the power supply to the displays including transistors, IC's, caps, ect. To this point, I haven't found any voltages missing or off. The EQ still actually works, just no lights or display of any kind. I'm missing something. Any ideas or direction you guys could point me in?
Yamaha EQ with no dispaly
- Thread starter CChoate
- Start date
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Welcome aboard.
I'd be looking in this general area. And the power supplies for this portion of the EQ.
I'd be looking in this general area. And the power supplies for this portion of the EQ.
pull the bulbs out of the back of the display and shine a flashlight thru the holes and verify that the spectrum analyzers are still working and go from there.
if the displays are working then check the voltage to the bulbs. should be 5.5-6vac
could be as simple as needing bulbs or as @avionic said, could be the power supply.
ribbon cables could need reseated.
if the displays are working then check the voltage to the bulbs. should be 5.5-6vac
could be as simple as needing bulbs or as @avionic said, could be the power supply.
ribbon cables could need reseated.