No audio from speaker out

[dan]

Hi @bpbell

Thanks for the debug info. This means the PS-100 power amp is not putting out any power. You have eliminated all cable issues (because it works in BYPASS) so this is a real issue with the PS-100.

Before touching the PS-100: disconnect the PS-100 from the wall and wait a few minutes for it to become cool and caps discharge.

Check the mains fuse on the back panel, did it blow? Replace it. See here for the fuses you need:

What fuses do I need for the Power Station PS-2 and PS-100?

Before replacing tubes or the internal fuse on the Power Station see Joe’s video Internal Fuse [PS Internal Fuse] The PS-2 and PS-100 need different internal fuses! PS-100 250V 2A Fast acting / Fast blow 5mm x 20mm Part Number: Littlefuse 0217002.MXP Note: alternative part numbers are OK: 0217002.HXP, 0217002.VXP or 0217002.TXP PS-2 250V 630mA Fast acting / Fast blow 5mm x 20mm Part number: Littlefuse 0217.630MXP Note: alternative part numbers are OK: 0217.630HXP, 0217.630VXP or 0217.630…

If it blows again, check the internal fuse and replace it.

If the internal fuse has blown you probably need to re-tube the PS-100.

• V1 = 12DW7/ECC832
• V2, V3 = 6550 Power tubes (Matched Pair).

FIrst you might want to try replacing the 12DW7 to see it the issue is the driver (if you don’t have a 12DW7 to hand you can test with a 12AX7 but never run the unit like this). If it comes to life then it was the driver. If not, it’s worth changing the power tubes.