[quote name='KK Jale' post='1227493' date='May 11 2011, 01:29 PM']Nice work, Happy Jack.
Good advice about using a precisely-fitted crosshead screwdriver to remove the amp cover. The screws on mine were incredibly tight. In the end I had to lay the amp down, use a socket set with a foot-long extension and apply all my weight… that did it. Just!
One more idea, especially if anybody chooses to use secondhand replacement valves (though I used a new Sovtek for V2 I robbed a lovely General Electric 12AX7 from my Fender amp for V1). On removing the Chinese originals, lightly press the nine pins into a soft surface (eg plasticine) and check that the pins on your replacement line up perfectly before inserting. If not, tweak them carefully into shape with needle-nose pliers. Bending the connections on the TB500's valve holders may (*probably will*) necessitate entire circuit board replacement!!
I bought this 80mm PC fan – [url="http://www.quietpc.com/gb-en-gbp/products/casefans/x-rw-80r"]http://www.quietpc.com/gb-en-gbp/products/casefans/x-rw-80r[/url] - to reduce noise but my tech advised that at 19CFM it didn't push as much air as the original so we left the old one in place. A 30CFM fan would be better.[/quote]
No offence but you're techs a noob, what cools it is static pressure rather than cfm, and most cfm are lying anyways