troubleshoot kenwood ka-76 home stereo intergrated amplifier blowing fuses?
there is no burned smell at all but every time turn on blows a fuse
Open up the cover and do a good visual inspection and look for anything obviously wrong or loose. If that is good, disconnect everything (speakers and all inputs) and see if the fuse still blows. If it does not blow, an external component may be causing the problem, like a shorted speaker or too low of an impedance speaker or positive and negative terminals shorted by a stray wire strand. Usually the output portion (amplifier section) is protected by sensing circuits. If an output was shorted, the system would shut down. I sounds like you have a power supply problem. The only way to attempt to fix it is with a schematic and a Variac (variable transformer) that plugs in between the receiver AC plug and the wall outlet. You need to slowly increase the variac voltage enough to power up the receiver without blowing the fuse. Once there is some power on it, you have to take voltage measurements of the power supply and find where the problem component is located and replace it. If the power supply is good, look for shorted output transistors in the power amplifier section. If one of those are bad, they are usually replaced in matched pairs. Good Luck
The revised version of the CD 60 CE now with an active Fender FTE3-TN preamp and an integrated tuner.
Fender CD-60CE features:
Dreadnought shape with cutaway
Spruce top
Mahogany body
Nato neck with Sonokeling fingerboard
20 frets
Fender Active FTE3-TN preamp with integrated tuner
Scale: 643 mm
Saddle width: 43 mm
Finish: Black
will an ordinary electric guitar amp do?
You should buy an amp that’s specifically designed for acoustic electric guitars. Many companies make them including Schertler, Fishman, Genz Benz, Ultrasound, and AER. Some other amp companies, such as Fender, Marshall and Crate, now include one or more acoustic amps in their product line.
I own a Behringer V-Tone GMX-212 and the main guitar input jack snapped off just like other people who bought this amp. I didn’t want to wait 3 week and pay $120 for shipping this amp so…
I tried desoldering the “remote” input jack and soldering it onto the main input circuit board and when I plug my guitar in it lets me go to the tuner and it all works but no sound comes out of the speakers.
I know the speakers are fine becuase I plugged in my mp3 player in the audio in as well as my guitar in the aux and change the volume of it by the Master Volume.
I could order an insulated input jack but is there anything else I could do?
Well, one thing you might try is getting an “inline” connector, cutting the cable to it, and soldering the cable onto the board. Once you do that, instead of a jack on the amp, you’ll have a wire hanging out with the jack on the end of THAT – ugly, but it is an alternative. Hell, if you’re smart enough to desolder and resolder a jack to a circuit board, you’ve already thought of that I bet. Have you resoldered the input jack back to where it was, and does it now work in the old location? If not, maybe solder flowed up into it and shorted something out when you soldered it into the new location, so if it also so longer works as the remote input then you’ll know it too is a bad jack (you’ll need TWO cords in that case).
Sure Electronics Digital Class T and Class D Amplifier Boards
How can I eliminate “line noise” or “hum” from my home audio system? I have a G4 and a DVD player plugged in.
The Mac G4 is connected to the amplifier via a USB audio device that converts to RCA output, then runs into the CD input of the amp. The DVD/VCR combo unit connects to the VCR input on the amp. I have a single RCA line running the video signal from the “monitor” output of the amp into the TV. I get the hum sound on the CD channel, as well as a series of moving vertical lines in the TV picture itself while playing a DVD. If I disconnect the USB device, the noise disappears. Likewise while playing music off of the Mac G4, if I disconnect the RCA line into the TV, the noise disappears. But when they are both connected, I’ve got the noise. What is going on here?
Another source of hum noise is ground loops in your wiring. There are several things you can do to help avoid this. One is to get better cables, as the other poster suggested, but specifically get cables with better shielding. Most RCA cables are poorly shielded; better shielding may result in less hum.
Another is to check the wiring of your house. By this I mean make sure that all the outlets that things are plugged into are three prong grounded outlets. Also make sure that the ground pin (the round hole in the outlet) has a good electrical connection to ground. You can do this with a voltmeter and ohmmeter:
1. Measure voltages on your outlet: use the voltmeter to measure the voltage between the two slotted holes and between each slotted hole and the round hole.
2.Figure out which slotted hole is at the same voltage (0 volts) as the round ground pin. This is what is usually connected to the white wire inside the wall.
3.Turn the meter to resistance/ohmmeter mode. Measure the resistance between the ground pin and the slotted hole you found above. This resistance should be near zero.
4.If you have some alligator clip wires, use them to extend the reach of your ohmmeter and measure the resistance between the ground pins of the different outlets you are using.
Another thing that can help is if you are using power strips is to put closely connected devices on the same power strip. i.e. plut the G4 and the USB device into the same power strip, and the CD player too if possible.
Above all, if you have anything with a 3-pin plug which you are adapting to a two-pin power plug, remove the adapter and use a true three pin outlet.
Chordette Toucan Blue USB & Bluetooth Headphone Amplifier Goldfrapp – Road to Somewhere
