Recently got a bargain on a Yaqin MS-300c, however it doesn't seem to be functioning. I suspect this is maybe why it was so cheap, but given that it was advertised as working, i figured i would try my luck knowing that i had plenty of legs to stand on if it turns out to not work.
The amp turns on and all lights and selections operate as they should and cosmetically it seems perfect, however it seems that i can't get any output (i've tried multiple sources and the speakers are fully functioning).
The power tubes are mismatched and don't seem to be illuminating like they should, and i feel like the problem lies in that they feel very loose in their sockets. If i had to guess i would think that maybe someone has put the power tubes in incorrectly at some point so the small holes are now as big as the big ones.
Now, i have an EXTREMELY basic understanding of some electronics, but it might be best to talk to me like i am a 3 year old just in case. I feel like the first thing to do is test the voltage on the sockets for the power tubes, but given this amp is the size of a toddler and the transformers are the size of said toddler's head, i am almost positive that i need to be especially careful not to electrocute myself. So... can i do that myself without risking my smoking demise? And if so, how would you go about doing such a thing? I have a multi-meter, so i guess i'm asking where to point the thing and what numbers i should be looking for.
Obviously testing some different tubes in there would also be useful, but i'd rather not shell out that kinda coin to troubleshoot an amp that may be beyond saving.
Any other suggestions as to what problems i might need to look for would be super helpful.
I attached some photos, because, surely it couldn't...
Thanks heaps in advance!