Question about JVC RX-554V Receiver

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No Power The Reciever does not power up, The mains comes in and through the switch, but diappears in the tap switch or transformer. dont have wiring diagram so cant realy test for voltage. All fuses are correct, non have blown.

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Michael Borelli

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Low voltage problem most likely in the secondary supply...accordianman

Posted on Oct 25, 2007

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Need wiring diagram for a schumacher se.1010-2 battery charger


You should be able reverse engineer this.
Verify this:... and this is basic
Red cable to battery comes from a rectifier... or two rectifiers
Rectifier goes to transformer Secondary
Black cable to Battery goes to a Circuit breaker, then goes to the ammeter.
Ammeter goes to the Transformer.Center Tap of the Secondary.
the Amp select switch selects the different primary windings of the transformer...
thats basically what it is..

Aug 18, 2018 | Schumacher Electrical Supplies

1 Answer

?Location and photo of the transformer for a gaffers and sattler wall furnace model S 90 FE.


No. The transformer "transforms" 240 volts to 24. Meaning the high voltage coming into the machine. Normally has a "c",208,240 written on one side. Follow your main power wire into the machine. Branches to heater and transformer. Look at wiring diagram

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

Mar 01, 2017 | Heating & Cooling

1 Answer

Color code for theromstat


Wiring Examples and Instructions
How-To-Wire-It.com
Basic or Common Connection Points
Terminal Colour Signal-Type Description C Black 24 Vac Common Common side of 24 Vac Transformer See Diagram below R or V red 24 Vac Transformer Power Power side of 24 Vac Transformer See diagram below RH or 4 red 24 Vac for heat 24 Vac power before heat switch see diagram below Rc Red 24 Vac for cool 24 Vac power before cool switch see diagram below Y Yellow switched power (cooling) Signal to turn on cooling system see diagram below W White Switched power (heating) Signal to turn on heating system see diagram below G Green Switched power for fan Signal to turn on fan (forced air) see diagram below
Heat Pumps/Multi-Stage Units
Terminal Colour Signal-type Description Y2 Can vary Switched power (2nd stage cooling) 2nd stage cooling signal to compressor W2 Can vary Switched power (2nd stage heating) 2nd stage heating/ sometimes used as emergency heat E Can vary Emergency heat enable Dedicated emergency heat 0 Orange Reversing value Reversing dynamics of the heat pump ----

Nov 22, 2015 | Honeywell Digital Round Thermostat,...

1 Answer

Denon dra 25 no power


John,
If you have a multi meter then unpug from mains supply.With meter
on "ohms" range check the following:-
Fuse F501 (and F502 if mult-voltage model)
yellow to white on mains transformer this should show some resistance.If you have a mult-voltage model check
brown to gray and orange to white. Both should show some resistance, if not your mains transformer has an open circuit primary winding.....

Mar 03, 2014 | Audio Players & Recorders

1 Answer

UNIT WILL NOT RUN WIRING DIAGRAM IS DAMAGED SO REPAIR PERSON CANNOT FIGURE IT OUT


a good service tech dont need a diagram he will just know how to do it. took me around 2 years before i could rewire a unit . you need power to certain things and you just go from there
ie: you need power to blower. you need power to transformer need secondary voltage from transformer low voltage makes the switches for things to come on or off. the compressor and starting for it has to be right or it wont run contactor has to be wired right. run cap has to be the right mfd and wired right are you working on something thats 230 volt single phase or 3 phase
need more info to help you

Mar 02, 2011 | Heating & Cooling

2 Answers

I am trying to wire this unit to a honeywell t stat model T87N1026


Wiring a new sub-panel to an isolation transformer is one method of wiring for balanced power. With a balanced power system, the power sent to each "hot" bus of the power panel is 50 percent per bus. This means that the total power of the system is split evenly between each side of the panel. Balanced power systems have the advantage of reduced noise generation. This characteristic makes this type of system great for audio.
1.Shut off the power feeding the isolation mains transformer at the main power panel. Use the documentation supplied with the isolation transformer to locate the center-tap wire on the secondary side of the transformer. Connect that wire to the sub-panel's ground bus bar.
2.Route the remaining two wires from the secondary side of the isolation transformer into the sub-panel. Loosen the two "hot" wire main bus screws in the top center section of the sub-panel. Strip 1/2-inch of insulation off of the two wires.
3.Insert each wire separately into each of the wire screw terminals.Tighten the screws to hold the wire in place. Do not over-tighten these screws. If there is a neutral wire, connect it to the neutral common bar. Once these screws are tight, close the sub-panel.8_8_2012_9_21_38_am.jpg

Jan 18, 2011 | Heating & Cooling

1 Answer

My mini max NT 400 shows it is not getting power. Nothing on the display is lit. Not sure where to start, any help is appreciated. Thanks


Start at the begining, make sure you have power going to the heater and check to see if it is 110 or 220v. If you have power and it is correct the next stop is your transformer and how it it wired. You should have a diagram inside the main power junction box for the heater. If you have good power in to the transformer and 24v coming out it will be in your safty circut. Roll out switch and pressure switch are good places to start. The main power or transformer are probally where you should look.

May 09, 2010 | Pentair Minimax NT Heater

1 Answer

I need to connect my remote wire to a accessory wire but i dont know which one is the accessory wire. I dont have that light tester thing so I cant try it out. I heard you can just tap it with some fuse...


The accessory wire that you are looking for is the one that tells the head unit to turn on when you turn the key in car. If you have an aftermarket deck then the deck has it's own for the amp usually it is blue and in your case may not be connected to anything. If you don't have an aftermarket deck you will need to find a wiring diagram for the car radio harrness and it will be labeled. You dont want to use any random wire because if that wire always has power your amp will stay on and kill battery. You can wire a switch if you choose this method to prevent that from happening. You may also try running a wire from main power of amp to a small fuse (remote uses less than 2A) then to a switch and then back to remote screw of amp.
This website has wiring diagrams but colors dont always match. http://www.the12volt.com/ Good Luck

Mar 26, 2010 | Kicker ZX10001 Car Audio Amplifier

1 Answer

Reciever will not turn on, has power before the main transformer but none after?? woud that be the transformer or would it be another component?


the transformer has a thermal cut out inside the winding.if you peel back the varnish coated paper where the wires go in ,you will see a cylinder .about 1/2 inch long with a cone shaped end.The thermal rating is on it.Replace that and it works again.
The typical output on that type of tranformer is a 12v 36 volt and 100 volt center tap winding set.when rectified,will put out +-9,+-27 and +-70 volts .

Feb 12, 2010 | Yamaha RX-V1700 Receiver

1 Answer

Whirlpool MH6151XHT-1 - No Power - Stumped


First change all the fuse and check whether it works or not, if it does not work than as per your finding the secondary transformer could be the issue, the secondary transformer tap down the voltage fro 230-240/110 to required control board voltage. the best thing if the unit is opened then the right problem can be found but as per your description either fuses are faulty or the secondary transformer.

Dec 12, 2007 | Whirlpool MH1150XMQ Microwave Oven

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