Question about Fisher Studio Standard System Ca-100 Receiver Amp Vintage Fm-100 Tuner Cr-100

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DC voltage to components

I'm hoping someone can please tell me how many Volts DC this unit supplies (supplieD actually - the one I have here was dead on arrival) to the cassette deck (CR-115) and tuner (FM-100) that accompany it. I'm not finding it anywhere on the back panel. All I find near the power supply output jacks is the rating in watts. And, speaking of the power jacks, I'm not familiar with that kind of connector. If someone could please tell me what they're called, I'd like to know. Thanks in advance for any assistance anyone might provide.

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Posted on Jan 02, 2017

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SOURCE: I don't have the manual

The manual for the Fisher amp is available for sale here: . Scroll down to the Owner's Manual for $15 and the inst. manual for $10.55. It's near the bottom of the site. Both will take an estimated 2-3 days to prepare and ship.

For the tape deck, see: . Again scroll down; it's $15.

I can't find any sites that have the manual for the tuner FM-9435. PacParts does list some parts for the unit: .

None of the manuals are available online as pdfs.

I hope this helps.

Cindy Wells

Posted on Jun 30, 2011


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1 Answer

Hp computer tower will not go on

Would that be an LED (Light Emitting Diode), blinking on the back of the Power Supply?

If so, instead of being an LED that indicates the Power Supply has power to it, it has now turned into a diagnostic LED (Light), and is telling you the Power Supply is bad.

Do you have an economical multimeter, so I can guide you in testing the 3 low DC Voltages; that come out of the Power Supply?
An economical multimeter can be purchased for as little as $5 to $12.
I have seen them on checkout aisle racks, in major discount stores.

The dangerous high AC voltage, is kept contained within the metal case of the Power Supply.
(100 to 240 Volts depending on what country you are in)

The Power Supply is a Converter.
It converts the high AC voltage into 3 low DC Voltages;
3.3 Volts, 5 Volts, and 12 Volts.
In comparison two D cell flashlight batteries produce 3 Volts DC.

Use a KNOWN to be good, Compatible power supply; for a temporary test unit.

{"Honey, I'm going to borrow the Power Supply out of your computer.
I'll put it back when I'm done."
"What? I'll be sleeping on the couch? K"} (Lol!)

Also, is the inside of the computer dirty?
(Computer Unplugged from power, Anti-Static Procedures FOLLOWED)

Let's start here......

Also, what is the Product Number?
Back of computer tower, white Service Tag.
P/N = Product Number

Post back in a Comment.

Apr 09, 2013 | HP Pavilion Computers & Internet

2 Answers

Wht kind of current comes out?

The computer's switch mode power supply produces DC (direct current) electricity.

Nov 05, 2012 | Computers & Internet

1 Answer

I have a problem with a HP Pavillion a1114n. when u press the power button the cpu fan spins up for about 1 second and then cuts off and then the power led blinks on and off continuously

Bad Power Supply.
Weak voltage power rail

The hardware components inside your computer (HP Pavilion a1114n Desktop PC), are cooled by air flow. Heat is radiated away, then air flow helps carry the heat away. (Heatsink/Fan)

The Power Supply is cooled by the same method.
Power Supply's used in today's computers are SMPS.
Switched-Mode Power Supply,

Click on the photo of the open Power Supply, to the upper right.
In-between the letters B and C, and C and D; are Heatsinks.

Look like whitish/grayish rectangular blocks, of varying thicknesses, stacked along a singular flat bar.

The block shapes are aluminum fins.

Whatever this Heatsink is placed against, it will absorb the heat from it, and radiate it away with the thin fins.
Air flow from the small internal Fan, helps carry heat away from the thin fins.

Heat = Wasted Energy
The Power Supply overheats, and cannot keep up with the call for power.
Components inside fail; the Power Supply fails.

A THIN coat of dust on the Heatsink fins for the Processor, will drop the cooling capacity a LOT.

If you would like to test the Power Supply, you will be using the test for the three main voltages;
3.3 Volts, 5 Volts, and 12 Volts. All are DC Voltage.

(In comparison two D cell flashlight batteries store 3 Volts DC.
The dangerous voltage is contained within the metal case, of the Power Supply)

You need a multimeter. An economical model is around $5 to $12.
Available in a multitude of stores. An auto parts store is but one example. Large store chains may carry them on a checkout aisle rack.

Or if there is a working unused computer, that has a KNOWN to be good, and Compatible Power Supply, you could borrow it for a temporary test unit.


Nov 04, 2012 | HP Pavilion a1114n Athlon...

2 Answers

No display

One bad or faulty lead connection can cause a computer to continue restarting on a cycle or to shutdown or fail to detect your hard drive

WARNING: Before you start troubleshooting remember that you are dealing with electricity that can KILL. - rules

Test all power and data leads that attach to your hard drive IDE,SATA

the leads from your (motherboard to your hard drive) make sure they have secure dust free connections and are not faulty

if its a 40 pin flat ribbon type it will be the first to fail

make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty

even something as small as a faulty electrical fan and its lead can cause you problems

computers need all power and data to continue through every working device and to have an end so any faulty leads will end up with a computer error

make sure your graphics card is securely seated with no dust built up or in the socket

if you remove your graphics check the socket to make sure its dust free

restart your computer then reinstall it this should activate found new hardware wizard

hope this helps

Oct 10, 2012 | Computers & Internet

1 Answer

Pc keeps shutting down

A) Computer is dirty inside.

Air is used to cool the hardware components inside the computer. If 'Gunk' blocks off the air flow, the Processor and GPU (Graphics chipset), will overheat.

[The Processor and Graphics chipset are the two hardware components that give off the most heat.
'Gunk' is Dirt, dust, hair, lint, food crumbs, you name it ]

If a Processor overheats it will turn off. (BIOS turns it off)
This is a fail safe feature built-in. Keeps the Processor from burning up. (Literally)

Power unplugged from computer, and Anti-Static Precautions FOLLOWED, a can or two of compressed air for computers is used, and Q-tips.

B) Power Supply has a weak voltage power rail. More than likely caused by bad Radial Aluminum Electrolytic Capacitors.
Check the three main voltages coming out of the Power Supply, with a multimeter set to DC Voltage.
Or borrow a KNOWN to be good, compatible Power Supply, for a test unit.
If bad replace.

(3.3 Volts, 5 Volts, and 12 Volts. All are DC Voltage. In comparison two D cell flashlight batteries produce 3 Volts - DC,

Scroll down)

This is not a suggestion to open the Power Supply, and attempt repair.

The capacitors inside hold a charge for weeks, months, sometimes over a year.

If your fingers touch the terminals on the bottom of a capacitor, the stored charge could be released to YOU!
If your fingers complete a circuit that one, or more capacitors are in, the stored charge could be released to YOU!

Shock is Bad to FATAL.

Capacitors need to be PROPERLY discharged before working on the unit.

C) Electrolytic Capacitors on the motherboard.
To be more specific Radial Aluminum Electrolytic Capacitors.

These are used on the motherboard as Filters, and Voltage Regulators.
The ones used as voltage regulators are in the Motherboard Voltage Regulator Circuit.

Part of what the motherboard voltage regulator circuit does, is to regulate voltage to the Processor.
The Processor MUST have a steady, 'clean', supply of voltage, AND it must be kept within the small tolerance range for the Processor.

There are capacitors in a row near the Processor. These are SOME of the capacitors used for regulating voltage for the Processor.
There are others not nearby, and located elsewhere on the motherboard, too.

Be aware of this when looking for bad capacitors.

For additional questions please post in a Comment.


Sep 29, 2012 | HP Computers & Internet

1 Answer

My computer turns off automatically with light on keyboard and motherboard

HP Compaq dx2300 Desktop PC?

90 percent of desktop computer failure, cab be attributed to;

A) The computer is dirty inside, to include the Power Supply.

B) The Power Supply is bad

Suggest you start with cleaning the inside of the computer out, but suspect the real problem is the Power Supply.


Because the CD-ROM is not working.


Your Power Supply converts your household/business AC electricity, into 3 low main DC Voltages.

Depending on your country;
USA = 120 Volts AC
Europe = 220 Volts AC
Australia = 220 Volts AC
Japan = 100 Volts AC

This is converted into 3 low DC Voltages for the computer;

A) 3.3 Volts (DC)
B) 5 Volts (DC)
C) 12 Volts DC

Each of the above is a voltage power rail.
The amperage for each power rail is stated on a label, on the Power Supply.

Voltage times Amperage = Wattage

Again, Voltage x Amperage = Wattage

All of the amperage of the voltage power rails are combined, (Added together), to equal the maximum Wattage, the Power Supply will deliver.
This should be stated on the Power Supply label also.

A) IF, all of the LED lights were on at once, they would use less than 1 Watt of power.

B) EACH fan uses 2 to 3 Watts of power.

C) A typical Processor can use 51 to 125 Watts of power.

[ Intel Pentium Dual Core E2160? Can use up to 65 Watts, ]

You press the Power On button. This in turn presses against a Power On switch,

This in turn, activates the Soft Power On feature of the Power Supply, and turns it on.

The first chipset to receive power is the BIOS chipset.

The BIOS program looks to see what devices are connected, does a Ram Memory count, turns the Processor on, then hands the computer over to the Operating System.

[ Windows XP and Windows 7, are two examples of an O/S ]

Primer over.

Your Power Supply provides enough power to turn the Processor on, then falls to it's knees. Doesn't have enough power to keep the Processor on.

[ A typical CD/DVD drive requires 15 Watts of power. It isn't there when all of the other hardware needs power first ]

Suggest you find a Power Supply that is KNOWN to be good, and COMPATIBLE, for a test unit.

Or you can test the 3 main voltage's coming out of the Power Supply, with a Multimeter set to DC Voltage.

Or you can just replace the Power Supply.

I would prefer you test with another unit, or test the voltages, before you spend your hard earned money.
It's up to you.

Diagnose the problem first. I could be wrong with the above, but if you diagnose using a test unit, or test the voltages, we will know whether the Power Supply is the problem.

Always start with the power First.

Perhaps there is an unused computer you may have access to, and can borrow it's Power Supply for a test unit. Has to be KNOWN to be good, and has to be COMPATIBLE.

What is Compatible? Means it has to have at least the minimum power cables, and the Power Supply must fit in the computer case.

(It is an ATX power supply)

Need recommendations for a Power Supply, post in a Comment.
Also will step by step guide you in replacing.


May 20, 2012 | HP Compaq dx2300 Microtower - RT950UTABA...

3 Answers

I have a desktop PC that when I turn it on it will power up and then after 6 seconds turn back off.

The first solution is right on the money, It's the video card, or many of us today forget to plug the damm thing in and the computer doesn't read and we think that there is a serious problem. If none of this helps then try troubleshooting through this PC repair guide. Hope this helps.

Dec 29, 2011 | E-Machines eMachines Desktop PC

1 Answer

I have a dell computer. when i turn on the tower and monitor i get just a black screen on the monitor. i have pushed a few buttons on the bottom of the screen and it just says power save mode please use...

No, it's the Power Supply.

Power Supply has a weak voltage power rail.

The monitor goes to Power Saver mode because it is not receiving a video signal. (No Signal)
This is because the computer is not working.

Dell Support > Dimension 4700 desktop computer > Service Manual,

Click on the heading - Advanced Troubleshooting

Is the Power On LED light blinking Amber? (Yellow)

Post back in a Comment.


{You can also test the power coming out of the Power Supply.

The Power Supply in your computer is an SMPS.
Switched-Mode Power Supply,

It converts the AC electricity from your home, or business, into DC electricity.
There are three main voltages produced;

A) 3.3 Volts (3 point 3)
B) 5 Volts
C) 12 Volts
All are DC voltage

Two D cell flashlight batteries produce 3 Volts DC.
(In case you are worried about being shocked.
The 'bad' electricity is contained inside the Power Supply's case)

If you do not have a multimeter, an economical unit can be purchased for around $8 to $12. A LOT of stores carry them. An auto parts store is one example.

Orange wires are 3.3 Volts
Red wires are 5 Volts
Yellow wires are 12 Volts.

ALL 3.3 Volt wires end at the same 3.3 Volt power rail in the Power Supply.
Same with 5 Volt wires, and 12 Volt wires.

You can test ANY Orange wire, or any Red wire, or any Yellow wire.

ANY Black wire you see is a Ground wire.

The red probe lead of the multimeter is the Positive lead. The black probe lead is the Negative lead.

The Positive probe lead is touched to a positive wire.
Orange, Red, or Yellow.

The Negative probe lead is touched to ANY black wire. ALL black wires are a Ground wire.

The function knob on the multimeter is set to DC voltage. (Dotted line over a solid line, with a dotted line under the solid line. The curved S line over a solid line is for AC voltage. This = No)

If there are different scale settings, set the function knob to 0-50 Volts. (DC)

Aug 24, 2011 | Dell Dimension 4700 PC Desktop

1 Answer

HP Pavillion pc doesn't boot up ... no fan, no start sound, nothi

Bad Power Supply.

The blinking green light on the power supply, is a diagnostic light that indicates this.

Suggestion is to;
1) Test the Power Supply voltages
2) Replace the Power Supply with a Known to be good, Compatible unit, for a test.


A) It is an ATX style of power supply.
The style used by 90 percent, of personal computers out there.


The test Power Supply unit should be mounted in the computer, for testing.
The power cables only reach so far, plus it is safer.

B) At least a 250 to 300 Watt unit, for a test unit. More Wattage is okay.

(The power supply that comes with the Pavilion a1310n, is a 300 Watt unit.

The 250 Watt unit stated above is just for a Test.
You are testing to see if the Power Supply is the problem.

More wattage is okay as a computer only uses what it needs.
If you have a 1000 Watt power supply installed, and the computer only needs 100 Watts; the computer only uses 100 watts.

The computer Will Not burn up, by installing a power supply with more Wattage than the original)

C) Correct amount of power cables, and correct kind.

Observe the power cables from the existing power supply, that are plugged into the various hardware components in the computer, and to the motherboard.

The test unit has to have the same power cables, and the correct amount of them.

Need help identifying these power cables, reply in a Comment.

The above may sound funny. Who has a spare power supply laying around, other than someone really committed to computers?

You may find yourself, or someone you may associate with, has a computer sitting in a closet, basement, attic or garage, that has a working power supply, (And is compatible), and can be used for a test unit.

Test the Voltages.

There are three main Voltages, produced by a personal computer power supply.
(DC. Direct Current)

1) 3.3 Volts (Wires that have Orange insulation)
2) 5 Volts (Red wires)
3) 12 Volts (Yellow wires)

(Two D cell flashlight batteries are 3 Volts {DC)

ANY Black wire is a Ground wire.

Use an economical multimeter to test the Voltages, or a power supply tester.

Power Supply on.
Positive probe lead (Red) connects to the power wire to be tested.
Negative probe lead (Black) touches ANY Black wire.
(Black insulated wires are Ground wires)

This is one example of a power supply tester,

What causes Power Supply failure?

A) Inside of computer is dirty, as well as the inside of the Power Supply.

Computer unplugged from power, (Computer case open, and anti-static precautions observed), a can of compressed air for computers is used on a regular basis as needed, to help prevent this.

There are two cooling components for a SMPS.
(Switched Mode Power Supply)

1) The internal fan
2) The Heatsink's inside

A Heatsink, is an object used to draw heat from whatever hardware component, it is placed against.

A Heatsink is generally just a flat, square piece of metal, that has tall, thin fins protruding from it.

The flat metal base absorbs heat, whereby it is absorbed by the tall thin fins, and radiated away.

In the case of a Power Supply, there is an internal fan which draws air in-between the fins, helping to carry the heat away.

Once the fan blades, (Plus center hub, and surrounding cage), become coated with gunk, and the Heatsink fins become coated, the cooling capacity drops tremendously.

Heat = Wasted Energy.
The Power Supply has to produce more power, to keep up with loss of energy.
Eventually hardware components inside the Power Supply fail.

B) Cheap quality components used in the power supply. (Cheap quality power supply)

Awaiting any question you may have regarding this.
Post in a Comment.
(Believe upper right of your page)

May 31, 2010 | Dell XPS 420 PC Desktop

2 Answers

External power problem

It's actually the opposite. 1/8" jacks are almost always positive tip. I think you are best off using a 9VDC supply. If the voltage is not staying constant at 9 volts it could certainly do damage. If the supply you used was a negative tip positive sleeve you may have burned out a component or two...and more voltage than recommended could have done some other bad things. If it does not work with a 9VDC supply with the correct polarity you can fix it yourself if you have electronic experience. You could also send it to me and I'll fix it at a reasonable rate.

Aug 26, 2009 | Ibanez Ts808 Vintage Tube Screamer Reissue

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