Got some used Litronics and having problems - output dim & they don't always come on

[AKnowles]

That amount of deposit doesn't look as bad as my previous ones, but if you do decide to buy replacements, stick with the Phillips brand. The link I posted previously is a good deal. I read an interesting thread on the quality of the various bulbs and have to admit that the "copies" really are not made nearly as well. From the quality of the glass to the grounding and support structure.

I kept my old bulbs. If you want them, I'll send them for you just the S&H. One bulb is OK. The other is dim (probably like yours). Just PM me if interested.