Question about Fender Frontman 65R 65W 1x12 Guitar Combo Amplifier

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Transformer started smoking

I need to know how I can replace the transformer in my frontman 65r amplifier my amp started squealing and smoking my amp is still under warranty but we are not able to find sails paper from the sale

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Posted on Jan 02, 2017

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SOURCE: Fender Frontman 65R Solid State guitar amp.

There is a protection thermistor in the circuit to keep it from over-heating, this is why it works again when it cools. Check and make sure you are not covering any ventilation holes, or if the unit has a fan, make sure it is working.

Posted on Aug 22, 2009

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SOURCE: My Frontman 65R clean channel distorting somewhat

Usualy bad solderr joints on the output pcb

Posted on Dec 07, 2009

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SOURCE: Hiss in new fender frontman 65R

A certain amount of "hiss" is present in electronic amps due to the statistical noise in electronics.

The hiss should be WELL below the level you get when playing. If you put you ear to the speaker, expect to hear some hiss with nothing plugged in. Ten feet away it should be very faint.

Posted on Dec 31, 2009

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SOURCE: need help! looking for a schematic for a fender

Try here:consumerrelations@fender.com.

Posted on Mar 16, 2010

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SOURCE: distortion in clean channel in fender frontman 65r

If the IC is MC1436, Pin one is not connected.Pins 2, 3 and 6 are the signal carriers, 6 is out 2 and 3 are inverting and non inverting inputs. CR13 and CR 14 would be simply something on the order of a 1N60 or a !N914 depending on body size,

If it works fine with heat snk screws removed, check to see if they short something out. Also look for small cracks in the board with the screws in place and snug. It also would not hurt to reflow the solder on all component leads and headers that are in the vicinity of the heat sink. Just because they "look" okay, does not mean they may not be faulty. Reflowing eliminates a cold solder joint as a possibility- which by your description is actually the most probable issue. Followed by cracked board and inadvertant short. Esepcially if the heat sink is supposed to be electrically isolated. If it continues, try using nylon mounting hardware for the heat sink, Also when powered up tap each IC, electrolytic capacitor and transistor with a pencil eraser- those that make noise may be the source of the problem. The applied stresses of the screws might deflect the transistor just enough to make a contact intermittent internally in the device..

Posted on Oct 30, 2012

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I have a fender frontman 65r with a 8ohm speaker can i add another 8ohm speaker to this


http://cie-wc.edu/Series_Parallel_9_14.pdf
Not recommended.
you could add 3 more 8 ohm speakers in series / parallel wiring and keep an 8 ohm load to the amp, or
2x 4 ohm speakers in series, or
2x 16 ohm speakers in parallel

Jan 11, 2014 | Fender Frontman 65R 65W 1x12 Guitar Combo...

1 Answer

Fender Frontman 212R crackling noise


After ruling out guitar wiring or bad cables...
Try the 2nd input on the amp
also
Is it on both channels, or just one?

Nov 01, 2013 | Fender Frontman 65R 65W 1x12 Guitar Combo...

1 Answer

My fender frontman 65r started crackling even with nothing plugged in


This sounds like one of this nasty problems with the solder points. One of them might be faulty so sometimes there is a contact sometimes not. You could try to locate it by knocking gently with the plastic end of a screwdriver on the pcb. If vibrations cause the noise you could check all solder points optical or just resolder them. There are not too many. Also check all potentiometers! As they are mechanical parts vibration caused issues can be found here very often especially on their solder points.

Mar 15, 2013 | Fender Frontman 65R 65W 1x12 Guitar Combo...

1 Answer

I left my fender frontman 65r on for over a year and yesterday a gentle hum for a few seconds then a loud hum for a few seconds more then no more power to the unit. I opened it and troubleshooted it around...


Why was it on for over a year :D Has anyone replaced the fuse? In the service manual I found it has to be only 2 Amps! Okay let's solve the problem. The power transformer was overloaded which caused the broken winding. It is still overloaded what can be heard by the hum sound. First thought was to check main capacitors or better just replace them! If the hum gets louder, they might also become warm. Check voltages after bridge rectifier and smoothing circuit. They should be +/-42 V (TP3, TP4) and +/- 16 V (TP5, TP6) Let me know which of them is faulty Cheers

Feb 11, 2013 | Fender Frontman 65R 65W 1x12 Guitar Combo...

1 Answer

Play mac through Fender Frontman amp


Simple: connect the headphones out (3.5mm jack) to the input jack of your fender (6.3 jack). By doing this you will loose one channel so you better generate a mono signal inside your computer before. Electrically this is no problem, nothing will be damaged. Turn the gain and volume knobs down and apply a signal from your Mac. Gently increase gain and volume. Et voila wonderful mono sound through a guitar amp

May 24, 2012 | Fender Frontman 65R 65W 1x12 Guitar Combo...

2 Answers

Hello, amplifier suddenly stops playing.The loudspeaker is very hot. I do not see the fuse.The control light is on, but the amp does not play.Please help me.This is the amp: Fender Frontman 65R. ...


There is something a bit more serious than the fuse. I would start by checking that the speaker itself is the correct type. This should be a 8 ohm speaker. Then I would play it and see if the output transformer is hot. This may be over driving the speaker. I would also look at the main power transformer. You might have one with the export transformer which can work with 110 or 220. I have no idea of your location so no idea which is your local level. Something is either over volt or over amps. Most of this amp runs at 15 volts and digital runs very cold compared to a tube amp.

I looked over the schematic and I just can't see anything else that would do that other than the things I have mentioned. A hot speaker is "very"unusual. If you can check the voltages with a meter this should be easy to point out the cause. It shouldn't take much for a amp tech to sort it out if you have to take it in. I wouldn't run it that much until fixed. When you see abnormal heat then something is being stressed. So you can cause more damage by using it. There may be a problem with the power transformer or votlage regulator stage but since the speaker is heating that could end up needing replacement if run too long.

Without having it in front of me I would sayy you may be looking at a new power transformer.or diodes and possibly caps. Any of those could cause the base issue. This is different enough with the hot speaker than I'm not that sure without seeing it.

Sep 11, 2011 | Fender Frontman 65R 65W 1x12 Guitar Combo...

1 Answer

Hi, I bought a Frontman 65R a couple of years from now, but last month I've moved to South America and I forgot to buy a Voltage transformer to use with the amp. (It changes from 110 volt to 220...


the fuse hopefully took the brunt of the higher voltage,, replacing the fuse should do the trick, but yes you need the voltage transformer for sure they sell them pretty cheap here, Just be sure and look for the wattage in each one http://www.dvdoverseas.com/store/index.html?loadfile=catalog6_0.html

Jun 02, 2011 | Fender Frontman 65R 65W 1x12 Guitar Combo...

1 Answer

I've told my Frontman 65r has a real reverb tank (accutronics). But it's almost imperceptible, even with the reverb knob at 10. Is that normal? Also, mid scoop for the drive channel and treble/bass for the...


The reverb should be quite strong. I would first look at the reverb volume pot R42 which is a 50K pot. I would also check the voltages on the test points near U4 (TLO-72 op amp tp13 and tp14) which amplifies the signal coming out of the box. It is possible the box has low power levels as well.
The problem is going to be around that section of the board if it isn't a dirty or dead(ish) pot.


The reverb should be noticeable enough to be annoying ;-]

Mar 18, 2011 | Fender Frontman 65R 65W 1x12 Guitar Combo...

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