Sounds like a pip module or comb filter with the video distortion but here are some repair world tips hope they can help:
Results TELEVISION HITACHI 46UX10BF AP23 chas Intermittent no start up, and vertical collapse. Replace C659 1uf@50v TELEVISION hitachi 50ux10b 50ux11k 46ux10 HV sync bad, red color , dark, b/w picture sometimes comb filter bad c201 1u /50v,c217 1u/50v, c101
10u/16v like pip module bad, but TELEVISION hitachi 46ux12b dead/blows 5a line fuse shorted d901 full bridge/d3sba60/nte530'? TELEVISION HITACHI 46UX12B....AP33 RELAY CLICKS SET DOE'S NOT COME ON ZD
932 30V ZENER 2339231 TELEVISION HITACHI 46UX10BF Customer can't converge from remote control Replace IC003 and IC004 TELEVISION HITACHI 46UX10BF Audio has a hum Leaky Q4013 and Q4008 TELEVISION Hitachi 46UX10BF Loss of color Check X501,C508, and M301 TELEVISION HITACHI 46UX10BA Slow to come on C916, C917, C921, C940, C973, C974 TELEVISION HITACHI 46UX10BF Dead, hi voltage starts, shuts down, SMPS squeals. SMPS:C926(1uf@50),C939(10uf@50),C916&C917(47uf@25),C921(2.2uf@50),C923(4.7) TELEVISION HITACHI 46UX17K INTERMITTANT WON'T COME ON OR JUST DEAD REG. IC STRM6511 TELEVISION HITACHI 46UX10BF Rolls 1st hour on. On Comb Filter Mod. replace 2-10uf@50, 2-1uf@50SMD and solder MF001 Crystal TELEVISION HITACHI 46UX17K NO SOUND REPLACE IC4001 PN 2004591 ON MTS BRD TELEVISION HITACHI 46UX10BF PIP PICTURE VERTICAL ROLL PIP BOARD REPAIR KIT AVAILABLE?MANY MODELS PN: X480125
Best regards --
Motorman