Sharp Microwave - no backlight

[stj]

Re: Sharp Microwave - no backlight

if the leds are in series a bad one will stop them all
having said that - it doesnt look like they are driven hard

[gurj1979]

Re: Sharp Microwave - no backlight

If it is a R-959, the display is an LCD with 10 led backlights (D10~D19) in series with a driver transistor Q2

Thanks RJ. Sounds right about the number of LED's. There's a good few of them in series. So if I replace that tranny, then all should be good ? Do I need to replace and SMD caps too ?

[gurj1979]

Re: Sharp Microwave - no backlight

is that really the part number? or is it R959?

You're correct. it's R959. I must have gotten mixed up with numbers.
Thanks

[R_J]

Re: Sharp Microwave - no backlight

If it is a R-959, the display is an LCD with 10 led backlights (D10~D19) in series with a driver transistor Q2

[stj]

Re: Sharp Microwave - no backlight

is that really the part number? or is it R959?

[R_J]

Re: Sharp Microwave - no backlight

Are you sure it uses a backlight or is it a VF Display? post pictures of the control board

[gurj1979]

Need help fixing mums Sharp microwave oven combi.
R-595 (sl)a
Backlight has gone. Can still see digits buy super dim.
Anyone with microwave experience help me out here ?