Hot rod deluxe question???

[mmguz]

I rarely use the more drive of the amp, but when I turn on the more overdrive inmediately begins to shhhhhh. sound, no matter if the volume pot of the guitar is in 0. Whe I turn up the drive doesn´t happen that. It occurs in all the hot rod deluxe or is a problem of mine. How can i fixe that

Thank you.

 

[jeremy]

Re: Hot rod deluxe question???

ive seen that on other hot rods, my guess is that the gain boost introduces the noise

 

[Benjy_26]

Re: Hot rod deluxe question???

Too much gain usually gives you noise. You can use az noise gate or suppressor in the effeects loop of your amp if it bothers you a lot.

 

[joelap]

Re: Hot rod deluxe question???

Boss NS-2. My saving grace... could be yours too. Pop it in the effects loop and you're golden.

 

[texasguitarslinger]

Re: Hot rod deluxe question???

This is from the Unofficial Fender Hot Rod Deluxe web site:

The 470 ohm 5W cement resistors in the +/- 16V supply are the cause of so many problems in the Hot Rod Deluxe/Deville it's unbelieveable. Are your channels randomly switching on you? Are you getting an uncontrollable squealing sound out of the Drive/More Drive channels? Is the reverb dropping in and out? All of these problems are caused by the notorious 5W cement resistors. But why? Did Fender skip out on quality? Yes and no.

The main problem is how the resistors are prepped. Look at all the other resistors in your amp. The leads come straight out of the component, bend at a 90 degree angle somewhere on the lead, and then are soldered onto the PCB. The 5W resistor's leads are bent as soon as they come out of the body. You should NEVER bend leads like this. This puts stress on the inside of the component and causes it to crack. Remember, some resistors could be burned up, cracked, and totally disfunctional and you'd never know from looking at the outside. The only way to test it is with a multimeter.

The other problem is that the resistors get so hot that they form cold solder joints. Cold solder joints are caused by physically stressed leads that are subjected to vibration and repeated heating and cooling cycles. They are very common on PCBs which use a wave soldering method like the Hot Rod Deluxe. If your amp acts fine when you first turn it on, but after a few minutes starts showing the aformentioned symptoms, then you have one or two cold solder joints. They're characterized by a dry/dull appearance; a good solder joint will appear shiny.