LG 50PC55 Red sparkles until warms up.

[clark97]

This set has had the 3300uf caps replaced in psu when powered on and image can be seen but very red and sparkly, gets better as set warms up.
Just wondered if anyone has had this before as I've replaced Y-sus which would be suspect but made no difference. Theres also slight image retention which again would suspect y-sus.

Thanks in advance.

Clark