No output except low somewhat distorted thru return jack. Replaced all power/preamp tubes with known good tubes. Contact cleaner on cable in efx loop several times/overnight, jumped efx loop, no change. Any ideas greatly appreciated.
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Laney TT50H No Outout
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Originally posted by ca7922303 View PostNo output except low somewhat distorted thru return jack. Replaced all power/preamp tubes with known good tubes. Contact cleaner on cable in efx loop several times/overnight, jumped efx loop, no change. Any ideas greatly appreciated.- Own Opinions Only -
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Post 3 contains the link to the service manual. Everything except a picture is included, even those connectors that is the main issue with most problems.Support for Fender, Marshall, Mesa, VOX and many more. https://jonsnell.co.uk
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Just ran line out and record out to another amps input and got a good clean signal. None of the preamp controls on channels 1,2,3 work, but volume 1 and volume 2 work, amp mute works, and fx mix is scratchy and tries to cut volume off at "0" but intermittent scratchy signal still comes thru at "0". Also, there is a high pitched whistle if volume is turned up past "8" on either amp. 2nd amp does not do this when TT50H is not plugged into it.
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Just ran line out and record out to another amps input and got a good clean signal. None of the preamp controls on channels 1,2,3 work, but volume 1 and volume 2 work, amp mute works, and fx mix is scratchy and tries to cut volume off at "0" but intermittent scratchy signal still comes thru at "0". Also, there is a high pitched whistle if volume is turned up past "8" on either amp. 2nd amp does not do this when TT50H is not plugged into it.
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Just ran line out and record out to another amps input and got a good clean signal. None of the preamp controls on channels 1,2,3 work, but volume 1 and volume 2 work, amp mute works, and fx mix is scratchy and tries to cut volume off at "0" but intermittent scratchy signal still comes thru at "0". Also, there is a high pitched whistle if volume is turned up past "8" on either amp. 2nd amp does not do this when TT50H is not plugged into it.
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Originally posted by ca7922303 View PostDrawing#9357_3 & 9357_4 are main power board drawings, but I cant find anything else online. I guess I'll have to try to email Laney?"Everything is better with a tube. I have a customer with an all-tube pacemaker. His heartbeat is steady, reassuring and dependable, not like a modern heartbeat. And if it goes wrong he can fix it himself. You can't do that with SMD." - Mick Bailey
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