0
\$\begingroup\$

Can anyone identify these two components, marked "SKY 4433" and "2.000000 K.D.S", respecitvely? Are they capacitors, crystals, or something else? They are from a vintage 1970s ball-and-paddle-style video game (Parat Game by Technigraph) based around the AY-3-8500 chip.

Gray component marked SKY 4433 Gray component marked "2.000000 K.D.S"

\$\endgroup\$
1
  • 1
    \$\begingroup\$ I can't confirm this, but the fact they are placed in such close proximity to a pair of ceramic caps and a tuning cap suggests that they may be early crystal oscillators, probably 2MHz. \$\endgroup\$
    – Caleb Reister
    Sep 30, 2019 at 7:25

1 Answer 1

Reset to default
11
\$\begingroup\$

Both are crystals. 4.433 MHz is for PAL subcarrier and 2.0 MHz for something else like CPU.

\$\endgroup\$
1
  • \$\begingroup\$ Great! Thanks!! \$\endgroup\$
    – plengqui
    Sep 30, 2019 at 10:56

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.