Hey all,
If you recall a few weeks ago, my MKIII Simul head lost the OD in the Lead channel. Volume was still there, but no OD. I thought I "fixed" it with a new tube in V3, but then it broke again, and for good. You kind folks here (Restless, et.al.) so kindly diagnosed the problem as a bad LDR. Well, I got it back from a tech just yesterday and she's back to her former glory ...wooohooo!!
The tech replaced 3 LDRs and two resistors ...one really large resistor, maybe a 5watt and the other maybe a 1watt. He also told me that whoever last worked on this amp butchered it (Hey Restless, you callled it right on ...that jumper wire you saw was a bandaid fix from the previous owner, ugh!). The tech had to fix a few PCB traces as some hack overheated the crap out of some areas of the PCB that I couldn't see from the top.
Kudos to the guys out in the Mesa Hollywood (sunset) store. I recall from some time ago that they didn't do any in-house work and sent gear out to Petaluma. But apparently they now have a tech who really seems both to know what he's doing, and whose shop rate is very reasonable to boot! And thanks to those of you here who helped diagnose the issue and give me an idea of what to expect (I hate going into a repair blind). You guys rock ...thanks!!!
Edward
If you recall a few weeks ago, my MKIII Simul head lost the OD in the Lead channel. Volume was still there, but no OD. I thought I "fixed" it with a new tube in V3, but then it broke again, and for good. You kind folks here (Restless, et.al.) so kindly diagnosed the problem as a bad LDR. Well, I got it back from a tech just yesterday and she's back to her former glory ...wooohooo!!
The tech replaced 3 LDRs and two resistors ...one really large resistor, maybe a 5watt and the other maybe a 1watt. He also told me that whoever last worked on this amp butchered it (Hey Restless, you callled it right on ...that jumper wire you saw was a bandaid fix from the previous owner, ugh!). The tech had to fix a few PCB traces as some hack overheated the crap out of some areas of the PCB that I couldn't see from the top.
Kudos to the guys out in the Mesa Hollywood (sunset) store. I recall from some time ago that they didn't do any in-house work and sent gear out to Petaluma. But apparently they now have a tech who really seems both to know what he's doing, and whose shop rate is very reasonable to boot! And thanks to those of you here who helped diagnose the issue and give me an idea of what to expect (I hate going into a repair blind). You guys rock ...thanks!!!
Edward