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18. Install C5, 10µF electrolytic capacitor. Electrolytic capacitors also
have a polarity and must be installed properly. You will note a "+"
symbol on the PC board silkscreen. This marks the positive side of the
capacitor. Most manufacturers mark the negative side of the cap with a
band containing minus signs ("-") or zeros. Also, the capacitor has a
long and a short lead. The short lead is the negative. Orient the
capacitor properly and solder in place.
19. In the same way, install C4, a 470 µF electrolytic cap. Check
polarity before installing.
It is now time to install the rest of the wire jumpers. Take a look back at step
14 to refresh your memory if necessary, then form the four jumpers you will
need.
20. Install the jumpers marked JMP1, JMP2, JMP3, and JMP4.
21. Install the RCA jack, J1. This is another part you will want to be
careful to seat properly before soldering. Be sure to solder all four tabs.
Three of the tabs are connected to ground and provide stablility for the
part as you plug your cables into and out of it. Also, a good ground
connection helps you get a good, clean signal so be sure to get a solid
solder joint on these connections.
22. In the same way, install J2, J3, J4, and J5. You may need to be
patient to get good solder flow to the ground leads.
You've completed construction of your AVS10 video switcher kit! We know
you're anxious to plug your kit in and turn it on but before you do that, take a
moment to look over your work. Check your solder joints and parts
placement. Also, be sure the programmed chip is seated properly in the
socket and that the polarity is correct on both chips. Now would be a good
time to check the polarity on the electrolytic capacitors as well.
AVS10 – 11
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