It is currently Mon Mar 16, 2020 4:12 pm

All times are UTC - 7 hours



Post new topic Reply to topic  [ 4 posts ] 
Author Message
Post subject: Weird noise coming from Hot Rod Deluxe II
Posted: Thu Dec 29, 2016 12:24 am
Offline
Hobbyist
Hobbyist

Joined: Sun Feb 23, 2014 12:37 am
Posts: 12
A couple of days ago, my HRD began to make a weird noise. It went away after a few minutes but now it's back.

You can hear it at https://soundcloud.com/user485777105/hrd-noise-dec-2016 kind of sound like popping or crackling.

The recording is the amp with no inputs, foot-switch or fx loop - Just the amp. It happens on both clean and gain channels. From about 12 seconds onwards, I press all the buttons and turn all the pots in order (left to right).

Any ideas what this could be?

Earlier in the year I had some humming issues so replaced the caps and large white resistors (R28+29?). The valves were also changed not long before that.


Top
Profile
Fender Play Winter Sale 2020
Post subject: Re: Weird noise coming from Hot Rod Deluxe II
Posted: Thu Dec 29, 2016 12:47 am
Offline
Rock Star
Rock Star
User avatar

Joined: Sat Jul 03, 2010 2:18 pm
Posts: 6544
Try cleaning the tube sockets and pins. I like Caig Deoxit D5 or GN5. for contact cleaner.


Top
Profile
Post subject: Re: Weird noise coming from Hot Rod Deluxe II
Posted: Thu Dec 29, 2016 1:01 am
Offline
Hobbyist
Hobbyist

Joined: Sun Feb 23, 2014 12:37 am
Posts: 12
OK, I just went ahead and cleaned the sockets and tube pins. Turned it back on and still have the crackling.

Left it on (without inputs) and the noise faded in less than 5 mins.

I also noticed that it was the smaller valves that were previously changed. Not the two large ones. Could they be on their way out?


Top
Profile
Post subject: Re: Weird noise coming from Hot Rod Deluxe II
Posted: Thu Dec 29, 2016 4:29 am
Offline
Rock Star
Rock Star
User avatar

Joined: Sat Jul 03, 2010 2:18 pm
Posts: 6544
How old are the output tubes (6L6GC)? Sounds like a possibility they are getting old and noisy. Maybe, have the idle bias checked?


Top
Profile
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 

All times are UTC - 7 hours

Fender Play Winter Sale 2020

Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to: