Did you check the speaker output fuse ? I believe, in mono it is a 10 amp fast blow fuse that is recommended from the manual ( I owned these amps ).
Looking for some Hafler XL-600 Amp service/repair references
Hello all, I have a pair of Hafler XL-600's. After intermittently
needing to warm up one of them recently stopped playing, it does power
up but no output. Amps are bridged Mono. Any idea's for some
troubleshooting and/or some repair references would be appreciated.
Especially in the Colorado area, Colorado Springs. Thanks in advance!!