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Old 19th May 2017, 12:51 pm   #3
ronbryan
Octode
 
Join Date: Jan 2003
Location: Guildford, Surrey, UK.
Posts: 1,958
Default Re: Telequipment S51 - No horizontal sweep

V7 should be an ECC88, not an ECC83 according to the circuit diagram. Did you mis-type the valve number or is the incorrect one fitted?

Have you tried running the scope with V7 removed. Hopefully that will stop R70 burning up.

Ron
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