Recent content by brandx73

Back in business!!!!

So I replaced the inductor today. I ohmed out the old inductor and it came in at 1.2 ohms, same as the new. Checked the sliders and they were all reading 50k (I removed them from the circuit individually). In case someone attempts this repair and forgets to take pics, with amp facing pcb up...

Mesa has shipped the 33mH inductor and should be here Saturday. Will update on slider resistance readings and success/failure of inductor replacement then. I appreciate all the help received from everyone who has contributed in this repair. Good bunch of knowledgeable folks here. Cheers! Will

@bandit2013 Thanks for the info. Will definitely check the resistance. I did replace all the sliders within the last year since buying the amp. I didn't replace the inductors though and i thought maybe that was what was going on. I have already ordered the replacement and waiting on mesa to...

Quick update. Replaced ldrs the 4n33s and the relays (just read a thread today in another forum about the relays getting stuck open or closed), and she works on all channels. Now my 6khz on geq not working. Checked wiring and everything looks solid. Will have to check schematic but thinking...

@Monsta-Tone Thanks. That was the plan to replace the 4N33s and also the VTL5C9s. That way they all have a same replace date and I can try to minimize assembly/disassembly. Just hoping I wont have to completely remove the board in order to get those components replaced. Anyway, going to...

@wildschwein Thank you for the response. I have been in comms with bandit. I wasn't sure if there was any major differences between the 5 and 10 variants. This amp went from amazing to wonky very quickly. As I have mentioned to bandit, I have replaced all the preamp tubes back to what I...

Also now when switching off and on sounds like metal crumbling or a spring being expanded...

Video of channel 1 cutout.

New update. Powered on to try to troubleshoot a bit. Channel 1 was working for a minute or so. Heard a high pitch click and it went out again. Sounded like a relay switching. Have a video of it as it happens for anyone interested that may be able to help. Thanks. Will

I used the search and saw there was a few peopel asking for one but I didn't want to revive long dead threads or hijack anyone. I'm having trouble with my dc-10. Ive ensured that the problem is not my tubes, replacing one preamp at a time and checking the power tubes in the same manner...