Ey Up Shaun. Going well so far. Just a note on the Rimlock valves you have. Yours are the early type with the metal base, they are OK to leave the spring installed, in later valves the metal rim was dropped and the nub was made part of the glass envelope and that is were the problem lies. The glass nub fractures as it passes the spring and allows air into the valve. Either way I move the spring out of the slot until I have finished the restore, it's just easier to remove the valves.
Ey Up David Great, really like information like that, I think the Bush dac 90 has the glass nobble on valves made by mullard Like you say good practice to remove the spring whatever the type Thanks for watching and commenting Best regards Shaun
your doing well shaun. you have the power supply working next try and get the audio stage working ..i dont know what test gear you have so cant surgest how you procede
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Ey Up Shaun. Going well so far.
Just a note on the Rimlock valves you have. Yours are the early type with the metal base, they are OK to leave the spring installed, in later valves the metal rim was dropped and the nub was made part of the glass envelope and that is were the problem lies. The glass nub fractures as it passes the spring and allows air into the valve. Either way I move the spring out of the slot until I have finished the restore, it's just easier to remove the valves.
Ey Up David
Great, really like information like that, I think the Bush dac 90 has the glass nobble on valves made by mullard
Like you say good practice to remove the spring whatever the type
Thanks for watching and commenting
Best regards Shaun
your doing well shaun. you have the power supply working next try and get the audio stage working ..i dont know what test gear you have so cant surgest how you procede
Thanks Rob
Slowly eliminating one component after the other
Best regards Shaun