OK guys thanks for the input. It seems that circa 05 and 06 Sovtek 5AR4's have very short life spans. It is sad as I have used Sovtek 5AR4's for nearly 17 years without a problem and would routinely get 6 or 7 if not more years of use out of them. I spoke to Otto at Sovtek/New Sensor and reports no increase in failures of that tube he wasn't convincing to me as I see many failures.
I have switched to JJ 5AR4's since the begining of the year and ( fingers crossed ) haven't had any rectifier failures to date with them.
It's funny to because most reprorted failures are on MAZ JR's, which has a low input capacitance 40 uF well under max rateing, and total currant draw of the Jr is under 100 mA and true 5AR4's are rated at 250mA max.
Good luck with the tube search Doc. I really appreciate the fact that you have taken time to consult with your customers on this issue in order to deliver the best amp you possibly can. How many other amp companies would do that. Luckily, I haven't experienced one of these problems, but it is very comforting to know that the man behind the amps is digging into this type of issue. Thanks Doc!
Post by Stylemaster on Sept 11, 2007 13:15:53 GMT -7
1 ) Have you blown a HT fuse ? I blew both fuses. 2 ) Was the rectifier the the cause ? Yes. Watched it spark before new fuses blew. 3 ) What model Z was it ? Maz Sr. Reverb Head 4 ) Circa of amp or serial number ? Q - 2006 model 5 ) Type of rectifier and date code at bottom of tube ? Sovtek
Replaced the rectifier with an OS (Old Stock) GE GZ34 - the original from my '64 Tremolux which my amp tech said was still good. Maz sounds like new amp now. And, most importantly, it works!
premiumplus (Dave): Due or do? Which or witch? Knob or nob? Their or there? Bass or base? Too much time on my hands...
May 24, 2020 6:31:30 GMT -7
roscoenyc: Ah, the incessant tire kickers. oh jeez.
May 25, 2020 6:57:46 GMT -7
GuitarZ: Needed some noise to fill a break in a tune I'm recording. It was too quiet. Just happened to have some High Quality Dr Z Ghia noise to fill the void. "Heal Your Sound with Dr Z! It's not just a guitar tone prescription!"
Jun 13, 2020 8:29:27 GMT -7
GuitarZ: Must be great to be a skunk. Eating bird food about 10' from our sun room. I'm clapping and yelling. At best, it might have given me one "yea what?" look while continuing to dine. At one point, there were two skunks and two racoons.
Jun 14, 2020 18:49:33 GMT -7
captainron (Ron): Hueter Toledo, just another business of today that doesn't care about tomorrow!
Jun 25, 2020 12:51:43 GMT -7
KeithA: Hueter Toledo....that business is gone to the dogs
Jun 26, 2020 8:22:26 GMT -7
easyed: Guitar Z, I encountered to ultimate garbage raiding combo once. We'd been having problems with the garbage cans being raided by raccoons for weeks. Late in the evening I heard rattling at the cans. I went out and found that he'd allied with a skunk. "OK"
Jun 30, 2020 11:40:27 GMT -7
GuitarZ: EasyEd - Someone at work topped us both. The inside of their car had been somewhat ransacked. They were blaming their son. They checked the video. It was a Bear! I'll stick with the racoons, skunks, foxes, and squirrels.
Jul 1, 2020 16:47:50 GMT -7
bigboki: In this age and time when everybody are struggling and especially S&Ms I am amazed to see that kind of ignorance. I am really sorry for your experience dear Dr Z but it is for the better. You don't want to do business with those kind of people anyway.
Jul 4, 2020 8:17:40 GMT -7
GuitarZ: Didn't want to restart the plumbing thread, so I figured I'd ShoutBox this. How the heck does cleaning the aerator on a faucet cause a leak to start under the faucet? Huh? Arggggh!!!!
Jul 10, 2020 7:40:17 GMT -7
The Bad Poodle Experience: well, Mike, it shouldn't have been the cause of a leak. double-check your work.
Jul 10, 2020 12:56:49 GMT -7
GuitarZ: I updated in the Plumbing thread that the Moen website says that a faulty aerator can cause a handle/base leak. Eiyy! I really don't understand how plumbing works. I was ready to double check all connections. But, the leaking stopped with cleaned Aerator.
Jul 11, 2020 18:13:56 GMT -7
jhen86 (jordan): Just got an email from Sweetwater rep that Z Wreck Jr's are back in stock. Just wanted to give everyone a heads up.
Jul 28, 2020 10:57:28 GMT -7
Lefty: Say a prayer for me fellas, I'm going to replace a bathroom faucet this weekend.
Jul 30, 2020 8:26:34 GMT -7
GuitarZ: Make sure you use your plumbers tape.
Jul 30, 2020 12:21:50 GMT -7
doctorice: Just replaced a kitchen faucet. Hardest part was getting the old one out -- had a weird flange on it. Good luck, Matt!
Jul 31, 2020 8:02:26 GMT -7
steiner: Just payed the plumer to replace a faucet and drains. Finally have non-leaking, speedy draining sinks!!!
Aug 4, 2020 8:08:03 GMT -7
GuitarZ: After finally training myself after 4 days to not bother trying to turn on the guest bathroom light because of the power outage, I just found myself bracing for the sound of the generator as I opened the garage door and it's now quiet. Power Back!
Aug 7, 2020 16:51:10 GMT -7