Hi,

I have a few old VCRs. I use one with my new UHD 49" Samsung
TV that has NO AV input.

I bought a AV to HDMI converter from Amazon.

ISSUE:

Sometimes, when I switch the source to the HDMI with the VCR (HDMI
converter) to watch a tape, the picture has poor contrast when I play a tape.
Note: At first, there is NOISE due to the VCR's analog tuner.

SOLUTION:

Change the VCR's signal source from it's tuner to AV. I have a Comcast
cable converter with AV output. I use a short cable from the converter's
video output to the VCR's video input.

John