Fig 3. Close up photo showing cracked solder connections
DigiKey carries low ESR replacement capacitors (Nichicon FC Series):
Ref Existing
Value recommended
alternative DigiKey-p/n
C8 56µF/50V
P10322-ND
C9 220µF/16V
220uF/35V
P10297-ND
C12,C25 1µF/50V
P10312-ND
C21,C22 1000µF/25V
2700µF/25V
P10286-ND
C26 680µF/35V
1000µF/35V
P10305-ND
R17,R18* 33ohm, 2W
33ohm, 5W, 1%
45F33RE-ND
FAN*
n/a
6.8CFM (w/o zener)
CR015-ND
Zener*
n/a
5.1V, for fan speed reduction 1N4733AFSCT-ND
Table 1. Replacement Component list (* = optional items)
Step #4 – Optional Cooling Fan Installation
You can also install a 12V fan 40x40x10 mm inside the perforated box to reduce the component temperature
and improve their lifetime; DigiKey p/n: CR015-ND
You may install the fan in the middle of the PCB long side on the perforated cover - see pics. Test for
sufficient room between the fan and inside PCB components.
