I have the excellent Orange LBT head as my spare amp head which was new last July
I noticed the compressor control was a bit crackly when turning ( was like it from new ) so reported it to Orange who said to return it to PMT
PMT then said it would go back for repair ( to be honest I was hoping they would swop it over ) so I thought instead of the hassle and possible risk of shipping it and waiting a while I took it upon myself to investigate.
Opened the top and sprayed contact cleaner into the pot and turned several times.
Put it back together and issue now gone, result. Took 30mins to sort and it’s now even better than new.
Still think they are often overlooked in favour of the Terror series but the LBT has a tube feel to it and it’s a loud amp.
Had considered selling it last year but for now it’s definitely a keeper albeit as a standby to my Ashdown
Update : Decided to send it back to PMT and they replaced it with a new unit 👍