Got ten WY-30 Wyse terminals to fix at tv shop.

Paxton Hoag innfoclassics at
Thu Apr 26 00:28:56 CDT 2007

> WY-30, part no: 900023-01
> Intial three I checked, are non-responding and no screen.  Opened up
> one and found that power supply is working and correctly regulating
> 5V and other supplies for the CRT (heater glowing direct power from
> PSU) but the deflection section not sweeping.   Checked digital
> section and found the 68B00 (6800) is non-functioning, not even a
> reset twitter on any of signals at instant of power on.  Tried
> replugging the ICs, xtal is oscillating thru a IC with many outputs.
> Any suggestions?

The 30s were known for failed Flyback Transformers. I seem to remember
you can find generic replacements. Not a great terminal with lots of

If you can get one with a good tube and transformer make that your test bed.

Paxton Hoag
Astoria, OR

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