03-08-2012, 02:19 PM
A bit more done to day smothing caps reformed.ez 41 fitted ,
time for some mains ,could not get at the variac so used lamp limiter fitted with 40 watt bulb avo conected across second 1/2 of smothing cap, voltage rose to 270 ,left for 15 mins nothing got hot or whent bang.
fitted el41 re applied power could not hear anything so checked volts allseamed ok!
connected signal injector to top of vol pot got a weak out put then did what i should of done and looked at the circuit ,there is of corse an audio pre amp stage in the ebc41 this is what the volume control feeds so fed the signal to c20 this couples the ebc 41 to the el41 ,now i have a nice loud output .
next i fitted an ebc41 i did not have a new one so had to dig the valve tester out and test some old one luck on my side the first one checked out good ,after fitting i now have the audio stage working well,decided to check c23 the tone corection cap as it was wax yes it was leaky
now to find more of the missing valves.
ps note the mains cable is fitted with a p clip also that c19 is hidden under c24.
pps i am working from trader sheet 1135.
rob t
time for some mains ,could not get at the variac so used lamp limiter fitted with 40 watt bulb avo conected across second 1/2 of smothing cap, voltage rose to 270 ,left for 15 mins nothing got hot or whent bang.
fitted el41 re applied power could not hear anything so checked volts allseamed ok!
connected signal injector to top of vol pot got a weak out put then did what i should of done and looked at the circuit ,there is of corse an audio pre amp stage in the ebc41 this is what the volume control feeds so fed the signal to c20 this couples the ebc 41 to the el41 ,now i have a nice loud output .
next i fitted an ebc41 i did not have a new one so had to dig the valve tester out and test some old one luck on my side the first one checked out good ,after fitting i now have the audio stage working well,decided to check c23 the tone corection cap as it was wax yes it was leaky
now to find more of the missing valves.
ps note the mains cable is fitted with a p clip also that c19 is hidden under c24.
pps i am working from trader sheet 1135.
rob t
if its made by hand it can be repaired by hand







