Many of these kinds of contacts are 'self cleaning'
I unplug / plug annually.
As a side note, I went to turn on my RPTV and the power lamp blinked red 3x, pause and repeat. NOTE: this wasn't the lamp light.
Instructions said a lamp connect problem. Well, I took it apart, cleaning and vacuuming as I went. Confirmed the lamp at least looked good, put it back together, paying special attention to plugging in the lamp firmly. Problem solved.
I unplug / plug annually.
As a side note, I went to turn on my RPTV and the power lamp blinked red 3x, pause and repeat. NOTE: this wasn't the lamp light.
Instructions said a lamp connect problem. Well, I took it apart, cleaning and vacuuming as I went. Confirmed the lamp at least looked good, put it back together, paying special attention to plugging in the lamp firmly. Problem solved.