More D'Yquem Problems

I've had tons of problems with tubes. Pieces from Wright sound, welborne, audio research, Jolida, Cary, air tight, sophia, and Allnic have had to go back for repair. My Allnic integrated was my most problematic. Blown tubes, blown caps, knobs that fell off due to general low build quality. As far as I can remember, I have not had to send in Shindo for repair. My Sinhonias a while back needed some freshening up when I sold them.

Best of luck with the D'YQ. Those are gorgeous and worth your effort. My GM 70 have been cruising without a hiccup for 2 years, but I'd love to hear those parallel 300b.


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Jerome W said:
Excellent One ! :lmao:


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it is always fun to wind the tube guys up a bit. And yes it can sound great when it is not burning the house down. Best song on tube gear Heat Wave.
 
kev313 said:
I've had tons of problems with tubes. Pieces from Wright sound, welborne, audio research, Jolida, Cary, air tight, sophia, and Allnic have had to go back for repair. My Allnic integrated was my most problematic. Blown tubes, blown caps, knobs that fell off due to general low build quality. As far as I can remember, I have not had to send in Shindo for repair. My Sinhonias a while back needed some freshening up when I sold them.

Best of luck with the D'YQ. Those are gorgeous and worth your effort. My GM 70 have been cruising without a hiccup for 2 years, but I'd love to hear those parallel 300b.


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What Allnic integrated was that?


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T1500. The 300b integrated. I basically got fed up with it after the third or fourth problem and sold as is / for parts for less than $1,000 to a local audio scavenger. Felt good to get rid of it.

Lest anyone think this report is anything less than my actual feelings after actual ownership, here is a picture of my youngest as a wee sprout rocking to the Allnic on my Musical Affairs speakers.
y2u8u4ah.jpg



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When it did work. Did you like it? Gorgeous view by the way. Where do you live?


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Just a quick update on the D'Yquem status.

Last night a friend whom I met on the other site came over to help me troubleshoot the amp problem.

He brought his tube tester, some spare tubes and fuses.

First we tested the GL300b's. Both tested like new, no problems. This did not surprise me as the issue originally was not like my previous issues where I actually saw the 300b glow bright red before it failed. This issue was after 30-40 seconds the amp just completely shut down, no power at all.

Although we highly doubted there was an issue with the 6AW8A tubes we tested them anyway. Both tested good.

We then opened the amp to check the fuse. The fuse looked fine and it also tested good.

Inside the D'Yquem there are two 6AL3 tubes soldered to some internal wiring. We decided to test these as well. It was a little tricky to remove them from their sockets and insert them in the tube tester without damaging the solder points as the wires are quite short. First tube tested good and the second one was completely dead.

Is this the problem solved? Don't know yet until tomorrow night when we will replace the bad GE 6AL3 tube and re-solder it back to the wiring.

Keeping my fingers crossed this will cure the problem and hoping it was just a bad GE tube and not something more serious that caused the tube to fail.

This is as far as I am willing to go on my own, anything more complicated and the amp will get shipped away for repair.
 
NOLG4EVR said:
Just a quick update on the D'Yquem status.

Last night a friend whom I met on the other site came over to help me troubleshoot the amp problem.

He brought his tube tester, some spare tubes and fuses.

First we tested the GL300b's. Both tested like new, no problems. This did not surprise me as the issue originally was not like my previous issues where I actually saw the 300b glow bright red before it failed. This issue was after 30-40 seconds the amp just completely shut down, no power at all.

Although we highly doubted there was an issue with the 6AW8A tubes we tested them anyway. Both tested good.

We then opened the amp to check the fuse. The fuse looked fine and it also tested good.

Inside the D'Yquem there are two 6AL3 tubes soldered to some internal wiring. We decided to test these as well. It was a little tricky to remove them from their sockets and insert them in the tube tester without damaging the solder points as the wires are quite short. First tube tested good and the second one was completely dead.

Is this the problem solved? Don't know yet until tomorrow night when we will replace the bad GE 6AL3 tube and re-solder it back to the wiring.

Keeping my fingers crossed this will cure the problem and hoping it was just a bad GE tube and not something more serious that caused the tube to fail.

This is as far as I am willing to go on my own, anything more complicated and the amp will get shipped away for repair.
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Good luck and good work! I hope that fixes your issues.


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Mike said:
When it did work. Did you like it? Gorgeous view by the way. Where do you live?


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It was ok. Not quite as refined as other 300b I've had, but not too shabby. A bit higher powered, a tad less magic. Not totally unlike my wright 2a3, but my memory is unreliable with such comparisons, I suppose.

Given the lack of growth, that looks to be a winter view or late fall through my front window. I live on the north side of Chicago.


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kev313 said:
It was ok. Not quite as refined as other 300b I've had, but not too shabby. A bit higher powered, a tad less magic. Not totally unlike my wright 2a3, but my memory is unreliable with such comparisons, I suppose.

Given the lack of growth, that looks to be a winter view or late fall through my front window. I live on the north side of Chicago.


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Thanks.


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NOLG4EVR said:
Just a quick update on the D'Yquem status.

Last night a friend whom I met on the other site came over to help me troubleshoot the amp problem.

He brought his tube tester, some spare tubes and fuses.

First we tested the GL300b's. Both tested like new, no problems. This did not surprise me as the issue originally was not like my previous issues where I actually saw the 300b glow bright red before it failed. This issue was after 30-40 seconds the amp just completely shut down, no power at all.

Although we highly doubted there was an issue with the 6AW8A tubes we tested them anyway. Both tested good.

We then opened the amp to check the fuse. The fuse looked fine and it also tested good.

Inside the D'Yquem there are two 6AL3 tubes soldered to some internal wiring. We decided to test these as well. It was a little tricky to remove them from their sockets and insert them in the tube tester without damaging the solder points as the wires are quite short. First tube tested good and the second one was completely dead.

Is this the problem solved? Don't know yet until tomorrow night when we will replace the bad GE 6AL3 tube and re-solder it back to the wiring.

Keeping my fingers crossed this will cure the problem and hoping it was just a bad GE tube and not something more serious that caused the tube to fail.

This is as far as I am willing to go on my own, anything more complicated and the amp will get shipped away for repair.
Click to expand...

Most of us have had repair problems of one kind or another and it is a pain I hope the tube is the problem. I reread my posts I am not making light of your problem and I do hope you have it solved.

Good luck
 
mep said:
Any amp that was this unreliable I would have dumped faster than a used prophylactic. This is supposed to be about a hobby that is fun and relaxing and not one where you sweat bullets every time you power your amp on. You have either had an incredible run of bad tubes or it's simply a defective design or a defective unit. You have already come to that conclusion and I agree with you.
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You mean like your Krell where you wrote several threads on having the buzzing transformer fixed? You complained about that amp for 2 years dude.
 
KeithR said:
You mean like your Krell where you wrote several threads on having the buzzing transformer fixed? You complained about that amp for 2 years dude.
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2 years? it felt like five! give the man his due:lol: in all seriousness i owned a pair of those beasts the xfrm alone was like 90 lbs, the amp was 140 lbs dry. mine buzzed a little and i had two strapped in mono (MDA-500). if his was worse than i remember mine were, it would annoy the hell out of anyone.
 
KeithR said:
If I had this issue, they would have just gone back. Period.
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As upset as I have been about this truth is tubes do fail. I felt that because the sound quality is absolutely superb when they are working it was worth a couple of hours of troubleshooting before I gave up on them. I will see tomorrow if my repair attempt is successful. I also collect vintage cars, they can also be a pain. But when running perfect they are sweet.
 
JJ : Great News !
I 'm happy your friend was able to help. Those tubes cannot be changed by someone not qualified.



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Got back to repairing the D'Yquem last night. Replaced the 6AL3 tube and re-soldered it back to the internal wire.

We then re-biased the 300b tubes and buttoned up the bottom of the amp.

The fuse in the power cord socket had blown so we replaced that as well.

Powered up the amp and seems to be fine.

Many thanks to my friend Rene. Without his help and tools I would not be listening to these wonderful sounding amps as I type.

It required several hours of work and days of frustration but back in business again. For now.
 
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