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well i have to apologize, as i had you do the test the wrong way.
not sure what i was thinking, but i meant to have you take the measurement on the TRACE, not the LEAD of W23 with the collector unsoldered from the board.

no, it won't matter whether or not the driver and final are soldered in for this test, as we have already eliminated them as culprits of your voltage drop.

please try the test again and tell me if the voltage on the collector TRACE drops the voltage on TX with the pin unsoldered.

more to come...
LC

[QUOTE="loosecannon, post: 606653, member: 1368"] well i have to apologize, as i had you do the test the wrong way. not sure what i was thinking, but i meant to have you take the measurement on the TRACE, not the LEAD of W23 with the collector unsoldered from the board. no, it won't matter whether or not the driver and final are soldered in for this test, as we have already eliminated them as culprits of your voltage drop. please try the test again and tell me if the voltage on the collector TRACE drops the voltage on TX with the pin unsoldered. more to come... LC [/QUOTE]

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