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WT46809 V18 shutdown with 2-3 Error code

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Mitsubishi
WT46809
V18
Shut-Down with 2-3 Code
Main Power Supply surges at startup causing Horz Deflection to spike, triggering error code 2-3 and shutdown. Cause is defective IC Error Amp IC9A51 (SE110N) not holding down. Replaced with NTE7215. Also replaced associated photocoupler PC9A51 with TLP421.

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