Fray Bentos wrote:

5 can mean bad tube, especially going green also.

In my experience, whatever is wrong with it,
repairing it is almost certainly a waste of money.

--
Timothy Murphy
e-mail (80k only): tim /at/ birdsnest.maths.tcd.ie
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland