I have a Hitachi projection TV 50UX15K and the comb filter died. Changed all the caps still no go. The question I have is I unerstand the S video does not go through the comb filter. So if I purchase a recorder with a tuner with S video output, will that put me back in business for a while? Also, will I need to put the defective comb filter back in?

Thanks in advance

Scott

A comb filter is not an expensive part, why not replace that. And ascomb filters are tuning items splitting IF it comes before the video stage so any video AV input should work.

rrobor

Thanks for the reply. If I could find the part I would replace the comb filter. The part is obsolete and not available.

have you tried capacitors in the input, quite often comb filters will leak and upset DC bias, a small ceramic capacitor as a blocker can fix that, so just look at the output expected on each pin and see if its gone out. Also check the schematic and see what its filtering there are multiple other filters doing exactly the same, if you got a few schematics just check for one similar.