Jon1982
Member
Hi guys,
Assembled the SX1980 after fixing a couple of issues and now running it on my main system to see what else I can find wrong with it
As title suggests there's a mains hum on switch-on. Its on both channels and independant of volume. It gets louder for a few seconds then begins to fade off, disappearing completely after a minute or so.
Any thoughts? I'm thinking recapping the power supply board. It looks like someone has already changed a couple. Board looks to be in a good state with no evidence of any frazzling !
Also got an anomaly on the FM, the stations sometimes come in weak and not in the right place (i.e. 106 MHz broadcast appears at 104.8 on the dial) but after a while this suddenly will correct itself... I messed about with the capacitor pots while I had it apart in an effort to improve FM signal.. think I might have stuffed something up?
Attached a couple of pics complete with new LED lighting (fitted new lamp holders and diode / capacitor to prevent flicker) I thought green was an apt colour for a monster of a receiver
Assembled the SX1980 after fixing a couple of issues and now running it on my main system to see what else I can find wrong with it
As title suggests there's a mains hum on switch-on. Its on both channels and independant of volume. It gets louder for a few seconds then begins to fade off, disappearing completely after a minute or so.
Any thoughts? I'm thinking recapping the power supply board. It looks like someone has already changed a couple. Board looks to be in a good state with no evidence of any frazzling !
Also got an anomaly on the FM, the stations sometimes come in weak and not in the right place (i.e. 106 MHz broadcast appears at 104.8 on the dial) but after a while this suddenly will correct itself... I messed about with the capacitor pots while I had it apart in an effort to improve FM signal.. think I might have stuffed something up?
Attached a couple of pics complete with new LED lighting (fitted new lamp holders and diode / capacitor to prevent flicker) I thought green was an apt colour for a monster of a receiver