On Tuesday, 9 July 2019 15:27:52 UTC+1, Jim GM4DHJ ... wrote:
tube started flashing ,,,,removed the starter works ok ....replaced the
started flashing again .....removed the new starter ok again...what is
wrong...the tube?....

If the tube works fine with the starter out, we know the tube is fine. Don't just give it a very quick check, let it run a good 5 mins like that.

If adding the starter it then keeps flashing, we know the fault is the starter. It could be faulty or simply the wrong type. Most are 4-80 or 85w, but some are 20w max, some are 120v or series, some are 100 or 125w for 8' tubes. Check you have a suitable starter.


NT