How to bias a tube amp with a Multimeter

I’ve had this Shuguang s8mk integrated sitting in storage for 6 years. I bought a multimeter to bias it. The meter is set up to mV.

I’m getting zero read results. The amp has been warmed up for 90 minutes.

It’s got a funky bias panel.

What am I doing wrong?

coltrane111-17-2024 10:19pm

coltrane1 OP Details Discussions Posts This discussion Message User 754 posts 11-17-2024 at 10:21pm Copy Comment URL Report Comment Edit Delete
noromance Details Discussions Posts This discussion Message User 9,769 posts 11-18-2024 at 05:04am Copy Comment URL Report Comment Edit Delete You have to have tubes plugged in.
jimmyblues1959 Details Discussions Posts This discussion Message User 141 posts 11-18-2024 at 12:19pm Copy Comment URL Report Comment Edit Delete +1 noromance .👍
coltrane1 OP Details Discussions Posts This discussion Message User 754 posts 11-18-2024 at 04:40pm Copy Comment URL Report Comment Edit Delete Tubes are already in and warmed up. That was a photo taken without tubes. Thx
freediver Details Discussions Posts This discussion Message User 1,173 posts 11-18-2024 at 05:29pm Copy Comment URL Report Comment Edit Delete I would try 2 things.. First confirm correct operation of multi meter using an electrical outlet or a battery of some type.. Second,go ahead & set up the amp,connect to a source & send a signal,confirming operation of amplifier(just be cautious & slow with the volume control)..If the MM is working as it should & you get sound from the amp.then you’ve got something going on with either the biasing test block or worse...