20 Most Recent Fender Hot Rod Deluxe Guitar Combo Amplifier - Page 8 Questions & Answers

The way you troubleshoot this is to divide and conquer. Run KNOWN clean signal into the "Power AMP IN" jack (note that it is a balanced TRS type input).

Verify the power amp downstream is clean. If not, then confine testing to power amp portion.

I would also check that the voltage across R66 is near correct IFpower amp portion is at fault.

I AM suspicious that the voltages on the scjhematic are AC peak to peak values rather than DC...

I think things in ovals are AC and rectangles are DC.

Here is an article that might help:http://www.guitarplayer.com/article/reverb-troubleshooting/jun-09/97165 Here is the schematic:http://www.fender.com/support/amp_schematics/pdfs/Hot_Rod_DeVille_Schematic.pdf Check to see if someone hasn't reversed the input and output cables at the reverb tank. Then troubleshoot the reverb section .

Are the tubes bad? Do they light up? Check the tubes and install replacements if necessary. If it's a preamp tube that went bad, just replace that one tube. If a power tube went bad then replace the set of power tubes. Be sure to get a matched set when replacing power tubes, and to bias them.

Try this article first for some ideas. http://www.guitarplayer.com/article/reverb-troubleshooting/jun-09/97165.

Look for bad electrolytic caps in the bypass caps for the power to the preamp stages.

First try turning the volume control down before turning switch to operate.

IF this seems to fix it, IF the unit has a tank reverb, the vibration of the reverb springs MAY be causing the problem. The solution then is to reduce the volume before applying power WHICH is a good idea anyway... from an electrical engineer.

You'll have to remove the amplifier section from the speaker cabinet and look inside the chassis.
Check the power transformer, the output transformer and the rectifier, see if any of these shows signs of overheating.

Hi,

There are so many sites.

One would be :-

http://www.torresengineering.com/

Thanks.

First thing I'd check is if the valves / tubes are plugged in properly (it doesn't take much to loosen them) Unplug the amp then take out all of the valves and put them back in again.

If that doesn't work, try swapping the preamp valves (the little ones) around (let them cool down first) that'll tell you if one of them is worn.

Failing that I'd try cleaning the gain and volume pots with some switch cleaner, and if that didn't work I'd bite the bullet and buy a new set of valves.

Hope that helps

This may sound stupid, but did you check the fuse?

Ah yes, the Fender Hot Rod Deluxe. I have seen more of these in my shop than any other amplifier!! I have even sent recomendations for design changes to Fender about this amplifier.
Sadly, your amp tech may be correct: while the amp is within working specs, you can still have an issue with a bad socket. The cheapest thing to try is to replace the preamp tube(s) you think may be causing the problem. If the problem persists, it may need to be serviced on this issue (by a different 'certified Fender tech'). In defense of the last tech you had work on this amp, these amplifiers have a brittle design and do not gig or travel well (there are a minority of these amps made that do perform). Fender tried to do too much for the price on this model: best advice is to fix it, sell it and get your tone with a more stable model made by Fender (like the new vintage re-issues). Fender, like Marshall, has for years been having problems when they get too far from thier 'working reciepe' of what made them great companies.
You likely have a socket that needs re-tensioned, or a preamp tube not behaving. If it is not these, then a tech had to dive in the house of cards that is this circuit. Sorry for the bad news on this, but it is the truth. I only take on Hot Rods that 'appear' to be fixable. I am a development engineer, build amps from scratch and fix them for the local music shops, and my success rate is a dismal 60%-ish percent on these...
Thanks,-mike

Your squier guitar is from 2001 Says the last link. For value, check eBay sold listings.

Serial Number Lookup

Fender Guitars https://serialnumberlookup.fender.com Fender is proud to now offer self-service serial number search function. Feel free to bookmark the link for future reference, and please be aware that not every ...

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Squier Wiki http://www.squierwiki.com > Serial-Number-Tracking The serial number is printed on a sticker located on the back of the neck, close to where the neck attaches to the body. Because the number was placed on a ...

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If it's the same as mine, the tuner has a little clothespin clip. You clip that on to your guitar's headstock and turn it around till you can see the screen while picking strings. The tuner picks up vibrations through the headstock and with it's microphone and it tells you what it hears. The little needle tells you the note and if the string you're plucking is below that note, above that note or right on. You have to figure out if you're in the right octave on your own.

Unfortunately Fender doesn't know it but the Squier site say Year: 2000 Location: Axl, China https://www.google.com/search?q=fender+squier+stratocaster+serial+number+lookup ..

Question edited for clarity and correct name of Amp. https://www.google.com/search?q=Fender+G-DEC+reset

Advanced Owner's Manual - fmicassets.com

fmicassets.com https://www.fmicassets.com > Damroot > Original PDF Preset Restore will NOT restore any media (band tracks) if they have been deleted from the G-DEC 3 hard drive (HD), which can only be done using the Fender FUSE .. ..