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How do i connect my sharp 7700cd

I have a sharp 7700cd power amp but i cant regulate the output volume please help how should i connect it.

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SOURCE: Connection and Power are fine to amp. Sound cuts

sounds like you have a bad ground conection, or your electrical system is bad

Posted on Jul 10, 2009

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Amp power dips when heavy bass drives my speakers, at low volume, the blue light flickers with the beat of the music. i suspect that the amp itself is the fault. tried a different amp.


Suggest connecting with a fuse to a car battery. The current available from a ATX power supply is about 10 amps for the 12 volt circuit(see link).

For a 100 watt per channel amplifier would require a minimum of 17 amps for a RMS (root mean square/average) It is the peak power requirement which is significantly more that can be the problem.

ei http://web2.murraystate.edu/andy.batts/ps/PowerRatings.htm
26262737-5ntl554mom5lyewa1raj0eax-1-0.gif For a typical high output stereo the fuse would be 40 amps or more!



26262737-5ntl554mom5lyewa1raj0eax-1-2.jpg Hope this helps?

Aug 19, 2016 | RCA Car Audio & Video

1 Answer

Galaxy dx-44v wont power on


check near the rear of the radio.. around the power input connection and the audio transformer there should be a 1n4001 diode.. check it for a short. replace it if it is.. and it should power up.. also in the same area check for any shorted traces.. on the circuit side.. also
on the sides of rci main board radios near the bracket screws theres a transistor voltage regulator.. make sure its connected to the board.. sometimes they come loose.

May 03, 2013 | Galaxy Radios DX-44V 40-Channels Base CB...

2 Answers

I just bought the sharp home theater system ht-sl70/ht-sl75 and I cannot get the volume to be controlled thru my remote. I have a 60 inch sharp aquos tv. It has no arc and when I use the rca connection it...


Hi
I just bought HTSL75 speakers. Its manual saying its volume is controlled by TV's remote control
But i am having Samsung UN46EH6000 LED. and Speakers is connected to LED via RCA and LED is giving fixed output, so all the time, speaker is working on full volume


Is there any workaround, so that i can control volume while using sharp HT-SL75 speakers with Samsung UN46EH6000 ?


Is there any volume control device to control the volume of the speakers in my case ?


Thanks for your help !!

May 09, 2012 | Sharp Audio Players & Recorders

1 Answer

My laptop speaker won't stop buzzing. It began


A buzzing/humm sound could be a earth loop problem. This is caused by connecting amp equipment into different mains power outlets.
Use a power board and connect all your amps and laptop to the one power board.

Nov 08, 2009 | HP Pavilion dv9000z Notebook

3 Answers

Green light on speakers and sub. No sound - only hissing noise


open volume control & remove check from mute button.

start-program-acessories-entertainment-volume control.

Sep 17, 2009 | Audio Players & Recorders

1 Answer

The sound goes off intermittently


Forget Sharp's defective speakers. Connect your sound output to powered stereo speakers and disable the internal speakers (look through the TV's menu). The operator's manual explains how to disable the internal speakers. You'll be able to control the sound normally (mute, volume) with a remote control.
I connected my stereo output (2 RCA plugs) to an old boom-box and I get better sound than with Sharp's built-in speakers.

Jun 28, 2009 | Sharp Aquos LC-37G4U 37 in. HD-Ready LCD...

1 Answer

Hook up speakers to 32 inch lcd hdtv


"Line" level audio output is available at the audio output phono jacks at the top of the rear panel, but not speaker-level output. So, you'll need an amplifier to use in conjunction with your external speakers. (An alternative would be "powered" or "amplified" speakers that have their own amplifier, but often are less satisfactory acoustically). You don't necessarily need to get a full-fledged "receiver" with multiple in's & out's... I simply used an inexpensive stereo amplifier.

Connect the "Audio L - R" jacks on the rear of the set to the "line" or "aux" inputs on your chosen amplifier and speakers. If you go into the set's Menu - Option - Output Select and set it to "Variable", the internal speakers will be disabled, and you can control the volume (and muting) of the audio sent to the amplifier, and still have "armchair" control of the volume as before... but now with better stereo!

May 16, 2009 | Sharp Aquos LC-37GD6U 37 in. LCD HDTV

1 Answer

Denon AVF988 to power amp to whole house speakers


jbell302, Check both remote spkers for operation from the A spks output if good, switch B remote spks to A main connect & main A spks to the B remote connection on the Denon spks outputs . Most amp sources do not like different ohm spks types & different cable or spks A-B. lenghts, because this makes up to resistances problems, making the amp to work harder & understanding what is going on. THE AMPS PROTECTION CIRCUIT IS AT ALERT & TRIES TO BALANCE THE RESISTANCE VOLUME. Best move is to try use the same spks. lenght & a higher qauge wire; 12.14.18qa. to better balance the output volume! All matching spks. pairs would help alot as well!

Feb 04, 2009 | Denon AVR-3805 Receiver

4 Answers

Pioneer QX-949


From Charles (owning a QX 949, still working but with some investment into repairs by myself) :
QX 949 contains a "power protection cirquit". This cirquit reacts aswell on short-cirquit (either within the output-amplifier cirquit {transistors} or by faulty speakers) as on overload (by playing musik toooo loud).
Your QX 949 might therefore either be affected by short-cirquit within one of the four output amplifiers or there might be a problem within the pre-amplifier or power section, causing an AC or DC signal to appear at the inputs of the output-amplifier section and therefore overloading the output, as if music was played too loud. First basic test: does the discribed "tick sound" (which means that after power-up the protection cirquit releases the relais again) also appear when the volume is turned down completely ? If not, the fault must be a signal produced within the pre-amplifier section before the volume regulation. If yes there still could be a pre-amp problem after the volume regulation but it´s more likely to be found within the output-amp section. One won´t get round to measure this section (oscilloscope) at it's signal inputs to exclude a faulty signal to arrive there. If this is not the case I would recommend to disconnect and reconnect the four output-amps from the power supply one after the other, for finding which one causes a short-cirquit. But before doing this: try out what happens if you change QX 949 into 2-channel mode by turning the socket on the rear panel. Doing this the output amps for the rear channels are deactivated. If your QX 949 was working under these conditions it would limit your further search to the amps for the rear channels.
There is also a small chance that the power-protection cirquit as such is faulty or that the power supply contains problems. The power supply has got 6 fuses that you will find underneath the bottom plate. Are they all still ok ? (If one of them is broken then there can be a positive or negative supply to the output-amps as these are receiving + and - DC-currents from the power supply)
Basically: this amplifier is almost about 30 years old. As the lifetime of electrolytic capacitors ends after about 15-25 years there appears the need to replace them all (on all the prints). I did it with my QX 949... but you definitely must love yours to do that, it's quite an investment of patience and time.
And: servicemanuals.net display on their webpage availability of QX 949´s service manual. If you can't find it I might be able to scan some pages.
Charles (Switzerland)

Mar 13, 2008 | Audio Players & Recorders

1 Answer

Volume


Check for any blown fuse on the board with the power transformer.

Jan 03, 2007 | Sharp CD-XP5500 CD Shelf System

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