wallythacker
New Member
- Joined
- Oct 27, 2014
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This is in my newly acquired TSL 60. I knew it sounded sick when I bought it hence the low price.
I have a Radio Institute of America tester that is very flexible and tests pretty much every tube ever to grace the innards of a musical amplification device.
Anyway, my Svetlana EL34 tubes (2000, January) are perfect, 100% on the tester. The 12AX7 closest to the output tubes was 90%, the 12AX7 under the metal cover was 98% and the other two12AX7 would both just slide into the replace zone when the test button was pushed.
The 12AX7 tubes are all Electro Harmonics and vary in date from late 1999 to mid 2000. The replacements I bought tonight are mid 2013.
Any thoughts on the matter?
PS. My TSL 60 was used as a workbench! I kid you not. Upon removal of the back plate I found a lot of sawdust. So I cleaned it out with a vacuum. Then I see some strange shiny material. I scrape a little with my fingernail to discover it's metal filings/shavings from some idiot cutting something metal over the TSL 60 head. I cleaned out all the filings I could see. Thankfully none of the sawdust/filings were on the chassis, transformers or tubes.
Anyhow, that's your laugh for the day. Some idiot used a Marshall head for a workbench.
Thoughts on why those two 12AX7 gave up and the others soldier on?
I have a Radio Institute of America tester that is very flexible and tests pretty much every tube ever to grace the innards of a musical amplification device.
Anyway, my Svetlana EL34 tubes (2000, January) are perfect, 100% on the tester. The 12AX7 closest to the output tubes was 90%, the 12AX7 under the metal cover was 98% and the other two12AX7 would both just slide into the replace zone when the test button was pushed.
The 12AX7 tubes are all Electro Harmonics and vary in date from late 1999 to mid 2000. The replacements I bought tonight are mid 2013.
Any thoughts on the matter?
PS. My TSL 60 was used as a workbench! I kid you not. Upon removal of the back plate I found a lot of sawdust. So I cleaned it out with a vacuum. Then I see some strange shiny material. I scrape a little with my fingernail to discover it's metal filings/shavings from some idiot cutting something metal over the TSL 60 head. I cleaned out all the filings I could see. Thankfully none of the sawdust/filings were on the chassis, transformers or tubes.
Anyhow, that's your laugh for the day. Some idiot used a Marshall head for a workbench.
Thoughts on why those two 12AX7 gave up and the others soldier on?