Clean the tuner & customer controls & you should be OK. Its hard to
tell but the pix looks to bright.
To rough check the CRT turn the color all the way DOWN so you get
a B&W pix. If its not B&W the CRT is probably getting weak.
Some adjustments may help that out.
BTW we sold Sampos for a few years. They ran & held up good for
a low priced set. Yours is apx late 70's
73 Zeno
LFOD !