WG6100 P314 Major Havoc Conversion Diodes Installation

Here are some photos of the add-on diodes as described in the Tempest and Space Duel to Major Havoc conversion instructions. I used 1N47xx (1W) parts instead of the 1N75x just because the 1N47xx parts have thicker leads and are a bit more physically robust. Also, their performance is a bit better as well.

The following part links are for parts that were in stock and lowest prices available at the time I posted them. If they are out of stock, just perform a general part search on Digikey for the generic base number. Any part with the same base number will work fine.

Location	Board	Part Type	Value	Manufacturer/Number	Supplier/Number	Comments	Quantity
Headers P600, P700 on back (see photo below)	Def	rectifier diode, 1N4007, DO-41 case	1A, 1000V	Diodes Inc., 1N4007-T	Digikey, 1N4007DICT-ND	Original part was 1N4002	4
Back upper left (see photo below)	Def	zener diode, 1N4736A	6.8V, 1W	Fairchild, 1N4736ATR or Micro Comm, 1N4736A-TP	Digikey, 1N4736AFSCT-ND or 1N4736A-TPCT-ND	Original part was 1N754A, 6.8V, 500mW	2
Back upper right (see photo below)	Def	zener diode, 1N4738A	8.2V, 1W	Fairchild, 1N4738ATR or Micro Comm, 1N4738A-TP	Digikey, 1N4738AFSCT-ND or 1N4738A-TPCT-ND	Original part was 1N756A, 8.2V, 500mW	2

 

If you prefer to use the original values instead of the above parts, use the following:

Location	Board	Part Type	Value	Manufacturer/Number	Supplier/Number	Comments	Quantity
Headers P600, P700 on back (see photo below)	Def	rectifier diode, 1N4002, DO-41 case	1A, 100V	Fairchild, 1N4007	Digikey, 1N4002FSCT-ND		4
Back upper left (see photo below)	Def	zener diode, 1N754A, DO-35 case	6.8V, 500mW	Fairchild, 1N754ATR	Digikey, 1N754ACT-ND		2
Back upper right (see photo below)	Def	zener diode, 1N756A, DO-35 case	8.2V, 500mW	Fairchild, 1N756ATR	Digikey, 1N756ACT-ND		2

 

P314: Click on images to enlarge:

Entire P314 Board:	P700:	P600:
Upper Left:	Upper Left:	Note: The heatshrink tubing isn't neccessary. I thought that it might help to strain-relieve the parts but it didn't make any difference.
Upper Right:	Upper Right:

 

 

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