Greetings,

I have a Sharp Microwave R-530BS (now R-530ES). The magnetron went bad. I
took it in fort service and paid for labor since the magnetron was under
warranty. I brought the unit home and plugged it in. The next morning the
clock display was missing a lot of segments. I called the repair place and
was told to unplug for 10 minutes and try again. It didn't help, even
waiting 8 hours. I dragged it back to them, and everything was fine.
Returned home and the next morning display was messed up again. The repair
guy says this happens a lot to them and they test for 4 hours. He said $100
would buy a new part.

I looked inside and see that there is a flat ribbon cable between the
circuit board and the display. The ribbon cable is kinked. Could this be
where the problem is or is there a real need to change out the parts?

I see that there are actually 3 parts to this control. First there is the
power circuit board. This holds the relays etc. Number on it is Sharp
FB030MR KPC-M-PP ... other side says QKITPB030MRE0. The second part is the
control circuit board. It holds the clock circuitry and touch panel
circuitry. Number on it is Sharp FA585DR...Lot No. 0074 B031MR. Last there
is the display itself. The relay board is connected to the circuit control
board by a flat ribbon cable (obvious round semi-flexible wires) soldered at
both ends. The circuit control board is again connected to the display by a
flat ribbon cable ( obvious flat wires or foil) connection to boards is
through some other method than soldering. Does anyone know if I can just
replace the circuit control board and display Vs the total three part
assembly? Does anyone have a working circuit control board and display for
sale?

Thanks in advance for your help and guidance.

Ray Batig