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 | a transformer coupled trigger circuit which produces | ||
a | a DC level base trigger. It gets fried when the battery | ||
gets | gets old and draws too much current.<br> | ||
<br> | |||
More often than not, the T633 Transformer (part number [[120-0876-00]]) | |||
is the | is the thing to fail.<br> | ||
[[Category:Instrument repair reports]] | [[Category:Instrument repair reports]] | ||
Revision as of 11:32, 28 December 2021
(Common Problems)
The 221 has a switching power supply. It has
a transformer coupled trigger circuit which produces
a DC level base trigger. It gets fried when the battery
gets old and draws too much current.
More often than not, the T633 Transformer (part number 120-0876-00)
is the thing to fail.