221/Repairs: Difference between revisions
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The 221 has a switching power supply. It has | The 221 has a switching power supply. It has | ||
a transformer couple trigger circuit which produces | a transformer couple trigger circuit which produces |
Revision as of 15:57, 14 May 2020
The 221 has a switching power supply. It has a transformer couple trigger circuit which produces a Dc level base trigger.It gets fried when the batter gets so old they draw to much current
Regularly the T633 Transformer is the problem on almost all of them