Question about Fender Hot Rod Deluxe Guitar Combo Amplifier
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Posted on Jan 02, 2017
SOURCE: fender 100w twin amp no sound
Here is a test you can do at home for the sound. Test out the speaker. To do this you will need two alligator clips with wire about ft. long. Remove the speaker wire clips under the speaker magnet and attach the alligator clips . Take a C size battery and touch both ends of the battery. You should here a scratching sound . If you do you know your speaker is OK. Then you have a problem that needs a Technician. A good music shop should be able to give you a idea of the repair cost. Don't go to a big music change, find a small full service shop that deals with Fender. I don't think this will cost a lot. Fenders play for years, Its truly worth the bench fee. Good luck DFD , please rate me thanks
Posted on Apr 19, 2009
I suspect the power supply has an issue. Most likely bad filter capacitors. This could cause "motorboating" where power is drawn and supply voltage collapses and then recovers repeatedly.
Time for the repair shop. The parts cost should be nominal... labor... well...
Posted on Mar 16, 2010
SOURCE: FM 65R plays and sounds
Also the volume will probably be lower going into the line level PA input... If the amp is shutting down for thermal reasons, driving it less might not get to the point of shutdown. The schematic shows a temp sensor that reduces and shuts down the amp if the heatsinks get to hot. Possibly you are driving the amp harder than it is intended, If it is as loud (I doubt it) driving the PA input, then I would expect it to shutdown, but you would probably have to drive it harder than your guitar because guitar levels are well below line level. The amp claims 65 watts... don't believe everything you read in spec sheets... You should be able to generate 100 Db of sound with it... The more distortion you use will drive the amp harder and heat the heatsinks faster.
Posted on May 13, 2011
SOURCE: There is an intermitent problem
To isolate the problem try another guitar with the amp just to make sure if it's a guitar or amp issue. If the guitar is working properly you need to check the tubes to be sure that the connections are all seated into the slots completely. Sometimes the tubes will start loosing power that makes the sound fluctuate up and down. Please check the solder on the tube sockets if it has crack, often it caused variety of noise and wired sounds in the amp. Inspect the back of the amp on the tube pc board, it will reveal failing solder. You will usually find cracked solder on the tubes socket pins. And at the bottom center of the main board are two 5w resistors, usually 470 ohm or 330 ohm. Poke at them. Depending on how much use they have been played it may be a good suggestion to then replace your tube's. You will notice a big difference with newer tube. But remember the bias must be set correctly to match the new tubes so they won't over heat.
Hope it helps.
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Posted on Jun 03, 2011
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