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Post subject: Fender Deluxe Reverb '65 Reissue - Hisses like a Kettle!!!
Posted: Thu Mar 05, 2015 3:12 pm
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Hello Guys,

This is my first post. I am desperately looking for an answer for my Fender Deluxe Reverb '65 Reissue.

I love this amp. Actually, it is my favourite amp ever. About 3 weeks ago, I traded my Blues Junior III plus some money for one DRRI. When I tried it at the seller's house it sounded like heaven for me and my style. However, once I reach my studio, a very annoying hiss was present and I haven't been able to get rid of it.

It is a weird hiss, almost like a kettle whistle. It sounds like interference, but I have tried it in different locations with grounded sockets and it's always the same. After 5 minutes or so, the kettle starts its annoying sound.

It doesn't increase the loudness as I turn the Volume higher. While playing, the hiss gets covered by the beautiful amp sound and it is inaudible, but when I am practicing and at less than Volume 2, if I leave the guitar aside to have a beer or pickup some of my notes and sheets, the kettle it's there and it's so irritating. I mean, this is supposed to be a very silent amp!

It is irrelevant of the guitar. It happens with my hybrid AVRI '65-AVRI'62 Jaguar with Curtis Novak pickups, my MIM Classic Player Jaguar Special, or my Gretsch Electromatic G5422TDC with Filtertrons HS (humbuckers). Actually, the god damn kettle sounds even if there's nothing plugged in any of the 2 channels. It is just there, almost waiting to bother me.

I tried taking out all tubes and then placed them back in different order, but there are no changes whatsoever.

I have ordered a whole new set of JJ's Tesla tubes to replace them all, but I am afraid it won't work since I am not absolutely sure if it is about the valves. Actually, a NOS Brimar rectifier is on its way, but as I live in Chile, I am not sure when will I have them all.

I would really appreciate any help since the hissing kettle is driving me crazy and I am on the verge of getting insanely, pathologically mad.

Any thoughts, opinions, suggestions?


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Post subject: Re: Fender Deluxe Reverb '65 Reissue - Hisses like a Kettle!
Posted: Thu Mar 05, 2015 6:56 pm
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You say you tried it in different locations. Do you mean different locations in the same room? It sounds to me like it is interference. Esp. because you mentioned that it was ok at the sellers home. Before investing any more money I would try it at another building or try unplugging other electrical or electronic appliances in your studio. I think you'll enjoy the JJs in any case, & we always can use a spare set of tubes :wink:


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Post subject: Re: Fender Deluxe Reverb '65 Reissue - Hisses like a Kettle!
Posted: Fri Mar 06, 2015 2:23 am
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If you turn the amp off and back on again without changing anything, is the hissing gone again for five minutes or is it there immediately?


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Post subject: Re: Fender Deluxe Reverb '65 Reissue - Hisses like a Kettle!
Posted: Fri Mar 06, 2015 4:27 am
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Remove V1 , fist tube from the right , from the back of the amp. Power amp Off.

Power amp ON
1-a No more hiss; try new good tube
b- Hiss ; remove V2 too

2- No more hiss , try new good tube at V2

3- Hiss , remove V3

4- No hiss , try new tube at V3

Do these test for all tubes , not for power output tubes
Report here.

Always power amp OFF before remove tubes or plug tube


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Post subject: Re: Fender Deluxe Reverb '65 Reissue - Hisses like a Kettle!
Posted: Fri Mar 06, 2015 8:39 am
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ChrisH1 wrote:
If you turn the amp off and back on again without changing anything, is the hissing gone again for five minutes or is it there immediately?

Actually, it goes away for a few minutes. However, if the tubes are hot enough, like turn it off and on in 30 secs, the hiss continues.

Thanks


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Post subject: Re: Fender Deluxe Reverb '65 Reissue - Hisses like a Kettle!
Posted: Fri Mar 06, 2015 8:40 am
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stratele52 wrote:
Remove V1 , fist tube from the right , from the back of the amp. Power amp Off.

Power amp ON
1-a No more hiss; try new good tube
b- Hiss ; remove V2 too

2- No more hiss , try new good tube at V2

3- Hiss , remove V3

4- No hiss , try new tube at V3

Do these test for all tubes , not for power output tubes
Report here.

Always power amp OFF before remove tubes or plug tube



I will try it later. I will post the results.

Thanks


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Post subject: Re: Fender Deluxe Reverb '65 Reissue - Hisses like a Kettle!
Posted: Fri Mar 06, 2015 8:45 am
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mojjett wrote:
You say you tried it in different locations. Do you mean different locations in the same room? It sounds to me like it is interference. Esp. because you mentioned that it was ok at the sellers home. Before investing any more money I would try it at another building or try unplugging other electrical or electronic appliances in your studio. I think you'll enjoy the JJs in any case, & we always can use a spare set of tubes :wink:


Well, I meant different sockets in different rooms of the same building. I understand your suggestion, but it never happened with my old Blues Junior III, my band's lead guitar's Blues Junior, nor the new Fender Rumble 200 bass amp.

I own several analogue synths, which are basically electricity turned into sound. No problems with them. No problems either with my studio monitors nor the vocal 400 watts amp. No problems with my MOTU audio interface, nor laptop with Ableton Live.

During the weekend I will try it in a different house. I will report results.

Thanks


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Post subject: Re: Fender Deluxe Reverb '65 Reissue - Hisses like a Kettle!
Posted: Fri Mar 06, 2015 9:15 am
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SurferMax wrote:
ChrisH1 wrote:
If you turn the amp off and back on again without changing anything, is the hissing gone again for five minutes or is it there immediately?

Actually, it goes away for a few minutes. However, if the tubes are hot enough, like turn it off and on in 30 secs, the hiss continues.

Thanks


This look tubes must be in operating mode ( warm ) to have a hiss.
We can't tell more about where is the problem .

You must do all tests with no guitar plug in the amp OK ?


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Post subject: Re: Fender Deluxe Reverb '65 Reissue - Hisses like a Kettle!
Posted: Fri Mar 06, 2015 10:03 am
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SurferMax wrote:
ChrisH1 wrote:
If you turn the amp off and back on again without changing anything, is the hissing gone again for five minutes or is it there immediately?

Actually, it goes away for a few minutes. However, if the tubes are hot enough, like turn it off and on in 30 secs, the hiss continues.

Thanks

Now I'm inclined to lean toward a tube issue.


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Post subject: Re: Fender Deluxe Reverb '65 Reissue - Hisses like a Kettle!
Posted: Fri Mar 06, 2015 10:54 am
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The 5 minute warmup does make it sound like a tube issue. Swapping the tubes around should make a difference though. The phase inverter would be my prime suspect. You can swap the 12at7s V3 and V6 to compare them.
Other warmup issues can come from power resistors that warmup and fail or break their solder connections. These usually cause major sound loss though.

The whistle could be a manifestation of a high frequency oscillation in the amp.
When you turn off the amp or hit the standby switch, you may notice that the frequency of the whistle lowers to a chirp as the sound dies away.
A common reason for the oscillation is an ungrounded reverb return line.
Try turning down the reverb and pulling the footswitch and reverb tank connectors out to see if it affects it.
High frequency oscillations also occur in the power stage through feedback loops. To check for power stage oscillations, pull all the preamp tubes except V6, the phase inverter. If it still occurs, than pull V6. If that stops it, you can be pretty sure the amp is oscillating in the power stage. Then you need a tech.


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Post subject: Re: Fender Deluxe Reverb '65 Reissue - Hisses like a Kettle!
Posted: Fri Mar 06, 2015 12:26 pm
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mojjett wrote:
[
Now I'm inclined to lean toward a tube issue.


Need the test I write to say more ,
Could be a tube(s) or circuit driving/ feeding a tube(s)


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Post subject: Re: Fender Deluxe Reverb '65 Reissue - Hisses like a Kettle!
Posted: Tue Mar 10, 2015 7:10 am
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stratele52 wrote:
mojjett wrote:
[
Now I'm inclined to lean toward a tube issue.


Need the test I write to say more ,
Could be a tube(s) or circuit driving/ feeding a tube(s)


Many thanks to all for your help!

It was actually a tubes thing.

Last night I replaced all 12AX7 with TUNG-SOLs and sounds cristal clear.

HOWEVER, now the Vibrato is noisier. I mean, with the original GT tubes, I had the hiss (coming from the tube that was in V2). But the activated vibrato wasn't loud when I wasn't playing anything, even without anything plugged in. Now it is louder, a little bit annoying. I am not sure yet, but I think I will have to replace also the the 12AT7s.

Am I too demanding from a tubes amp, or do you think I could get rid of that noisier Vibrato?

Thanks!


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Post subject: Re: Fender Deluxe Reverb '65 Reissue - Hisses like a Kettle!
Posted: Tue Mar 10, 2015 8:00 am
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If you're referring to the ticking, it's not a tube issue. I have that on mine, but I never use the vibrato anyway so I just leave it off. It's fairly common on DRRIs.
viewtopic.php?t=47463


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Post subject: Re: Fender Deluxe Reverb '65 Reissue - Hisses like a Kettle!
Posted: Tue Mar 10, 2015 8:11 am
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mojjett wrote:
If you're referring to the ticking, it's not a tube issue. I have that on mine, but I never use the vibrato anyway so I just leave it off. It's fairly common on DRRIs.
viewtopic.php?t=47463


Thanks for your reply.

I know it ticks, it's just that the ticking volume is higher now than with the old tubes. Maybe new tubes (V5 I think is for the Vibrato) are more sensitive than the old ones, so the ticking noise is louder.

Have you tried the mod suggested on the link you sent me? Anybody else have done it to a DRRI, TRRI or SRRI?


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Post subject: Re: Fender Deluxe Reverb '65 Reissue - Hisses like a Kettle!
Posted: Tue Mar 10, 2015 8:20 am
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No sorry I haven't tried the mod. Mine isn't too terribly loud & as I mentioned I don't really use vibrato.


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