>A word of warning. There is _NO POINT_ in replacing
all the valves in a
>Tektronix 'scope -- most of them will be fine even after many years of
Okay.. (my lack of tube knowledge talking)... a TV
repair guy I know who use
to do a lot of tube work told me tubes only last a couple of years. I did
The tube newsgroup recently has been talking about buying old scopes just
to harvest the tubes. When you get a good look at what good quality tubes
cost these days I think you will see why. Here are some completed eBay
prices;
208721609 (4) NOS NIB Telefunken ECC803S/12AX7 Tubes $511.00 *
17 * 12/04 08:04
204768092 10 TELEFUNKEN 12AX7 TUBES, HiFi TUBES AMP $222.50
8 11/27 21:24
200257197 13 Mullard Short Plate 12AX7 Tubes (+3) $207.50
7 11/20 23:44
200233119 Long plate Amperex (Holland) 12AX7 Tubes! $201.00
8 11/20 22:06
209320344 4 telefunken smooth plate 12ax7 tubes n.o.s $183.50 *
7 * 12/05 00:20
200550622 12AX7 A(ECC83) IEC 10M series, Mullard tubes $180.00
5 11/21 14:10
210887834 5 Mullard 12AX7's NOS Radio Vacuum Hi-Fi Tube
$167.50 16 12/03 00:03
204691362 3 TELEFUNKEN NOS NIB ECC83/12AX7 $157.50 10
11/27 19:36