by daisuki »
Thu Nov 03, 2011 1:54 pm
[quote="ericmark"]When a tube goes it tends to over work the starter and often it takes out the starter at same time as tube. It is common as the tube starts to go to be able to keep it running for a little longer by removing the starter.
In old units there are three components the choke, starter, and tube. The choke does not often fail, the tube will last around four years and is matched to the choke. The choke does two things if gives a pulse to get it started and limits run current. The starter can be divided into two types. Electronic will only work with single tubes but tend to last longer and bi-metal will work with twin tubes and there are more versions to cover same range plus do not last as long.
So the choke will say what size tube and the starter will say what tube it matches. However there as Sparx says some odd ones that need a special type. So easy way read the details on old one and match with same type of new one. The same with tube wattage and thickness.[/quote]
Many thanks for all your help, as the unit is 20yrs old now, i have decided to replace the whole thing.