221/Repairs: Difference between revisions
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Regularly the T633 Transformer (part number [[120-0876-00]]) | Regularly the T633 Transformer (part number [[120-0876-00]]) | ||
is the problem on almost all of them. | is the problem on almost all of them. | ||
[[Category:Instrument repair reports]] | |||
Revision as of 02:39, 4 July 2020
(Common Problems)
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 (part number 120-0876-00) is the problem on almost all of them.