sd/ff problems

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Hi...

I have a DCE (i think) scandoubler-flickerfixer, close to this one of the pic but in a transparent case.



Well i have some problems with it, first and the most important (in my opinion), temperature, sd/ff reach very hight temps in 5-10mins of runtime, second is all the noise and interferences in screen, im tryying with some monitors all of them CRT with the same result. Anyone with this sd/ff and same problem or know how to solve it?

This sd/ff have 2 leds one for signal by-pass and one when ff is active, a switch is present behind VGA connector, what make this switch?

Thanks.

[kickstart]

Hi...

If switch is for a some kind of fine-tune, can i switch on/off with the amiga switched on? and any idea for power supply for de sd/ff fan?

Thanks for the answers

[kickstart]

Hi

The sd/ff of my first post is this:



But now i have another question, i hace a pic of the sd board and apears one resistor between 2 pins of the 23pin connector,  my sd/ff dont have this resistor, this resistor seems home-made, anyone know if is something for fix some bug or what? the pic is the following (sorry for the size)