Q:I am trying to install a additional parts to my car. when i remove the bare PCB with lcd from the head unit. i accidentally grounded the circuit board to the Metal plate, it create a little spark. now the LCD doesn't work. my question are1. is the circuit board fried?2. could it be just a blown fuse?3. after ground the board, could it be just burn resistor?

It is most likely one of the components on the circuit board. Most of these components are 5 or 12 volt parts and easily damaged. Check for a blown fuse but you will probably need the circuit board diagnosed and repaired. ps I am an electrical engineer with over 30 years experience in damaging circuit boards.

Q:I have already checked the fuse and it is fine. If I bought some freon would that maybe get my air back on? If not, any ideas on what else could be be the problem?

Fan motor could be effected by a fruse/relay. If you have this working but still no cold air then you need to recharge your system.

Q:Battery is Good, Alternator is good, both have been tested. My car starts up with no problem. when im driving in a neighborhood without having to apply alot of pressure on the gas everything is fine. But the moment i enter a freeway/highway where i have to press the gas a little harder my alternator fuse (30a) blows instantly as soons i begin to speed up the battery light comes on. I put another fuse in and same thing, everything is fine when im not pressing the gas hard but the moment i have to apply pressure my alternator fuse blows and the Battery comes on. So replcaed the fuse once again. This time i put some tape around my O2 Sensor wires. And wala! It worked, no fuse blowing when i speed up but then after like 15 min of driving it started back :/. What could be a possible fix?? thanks!!

Alternator Fuse Keeps Blowing

Q:If I were to connect an appliance to something other than an electrical wall outlet for power and that device produced more volts / watts than what my appliance needs to work, would it mess it upand if so how to I control this?

if V I R, you are effectively increasing V while keeping R constant; so I through the device must increase. Power dissipated by the device I^2 R : so by doubling the applied voltage, you'd quadruple the power dissipated by the device. If you're lucky and the components can handle the additional heat dissipation requirement, then nothing will happen except the device will become quite hot to the touch. If the components can't handle the additional heat being generated, the device will burn out. If you're lucky, there is a single fuse or component that will burn out and break the circult; stopping the flow of current. If you're not lucky, then the device could continue to heat up and eventually catch fire. you need to buy/acquire/build a voltage converter/power supply -- something that will take the input voltage and current and output the voltage'/current required by the device. Running 12V electronics from a car lighter socket, you encounter this all the time. The DC adapter basically takes the raw 12.6V and ensures that the voltage/current specification required by the device are met.

Q:I have a 240 watt car amp and every time i put my ground wire in the fuse blows and the only other thing i have hooked up is my power no speakers or remote just the ground and power can someone please help me?

Okay your wire is way to small for that much power. You need at least 2 gauge wire from the battery back for that much power. I have one amp running 600 watts and i have 4 gauge wire running back to the amp. The best thing to do it replace all of the 8 gauge wire with something much bigger and try that. I would use 4 gauge. Many times the wire gets too hot and blows the fuses which saves you and your car from possible fire. Also check in you amps manual and see what size fuse/s it should take and make sure that you have the correct one/s installed in the amp itself and also the fuse inline from the battery. hope this helps.

Q:i just upgraded from a p200-2 to a t500.1 they are rockford amps. i had the p200 powering two alpine type r's. abc warehouse told me i was severely underpowering them and continuing to do so would ruin them. they hooked up 4 gauge wiring but kept my fuse and fuse holder. i plan on buying the bigger fuse holder and the 200 watt or voltage (idk how they measure them) fuse for the amp but i was wondering if i could use it for a couple weeks until i have the time and 40 bucks to buy and install these parts. they also told me that my jvc cd player doesnt have the right input for subs even tho ive been there 3 times with that same cd player and they never told me this. heres a list of my stuff. 2 alpine type r 12 inch subs in a q-logic ported box. a jvc cd player ( i payed round 150) a rockford t500.1 amp, 4 gauge power and ground wires, 8 guage rcas, and remote wire, a fuse holder that came with a 8 gauge amp wiring kit and a 80 watt fuse. what would you do next if you were in my situation?

you could use the fuse, but its not really large enough to protect your wire (could burn out and cause expensive electrical problems) if i were you i would wait to play the sounds until i had everything connected properly with components with the proper rating and its true about under powering If you send too much power to your sub, you risk damaging it. The cone of the speaker and the mechanical parts that make it move may break under the stress. Surprisingly, too little power can also damage your subwoofer — in fact, it's actually more common than damage caused by overpowering. When the volume is turned up and the amp doesn't have enough power, the signal becomes distorted, or clipped. This distorted signal can cause parts of the speaker to overheat, warp and melt. Not good! You don't have to match speaker and amp wattage's exactly. An amp with a higher output than the speaker's rating won't necessarily damage the speaker — just turn the amp down a bit if you hear distortion from the sub and don't run the speaker at extremely loud volumes for lengthy periods. Likewise, you'll be OK with a lower powered amp if you keep the volume down and don't feed a distorted signal to the sub.

Q:Describe the function and operation of these componentsTransformer.Twin and earth cable.Battery.BS 3036 Fuse.Thx for the help guys , websie links with diagrams would be much appreciated :)

Search okorder

Q:I am trying to fix the a/c and i need to find the relay. I have to fuse box but cannot locate the relay and thats where i found the problem to be

You can get a Chiltons and Haynes Manual for or jeep at Auto Zone, Parts Plus or even the part department of a jeep dealer. The wiring diagram is in these books.

Q:i already had a 600w rms mono amp for my bass and a 1.0 Farad Digital Car Audio Capacitor, and it was fine for a year , a few week ago i install a 200w rms American pro amp to run my door speaker and it happen every morning i had to jump my truck, i unplug that new amp for a week and everything went back to normal during that week i took truck to dealer for a 250 point inspection everything was fine ,i saw that my battery was a cheap factory battery so i got a optima battery i rewire everything 0 gauge front to back and 4 gauge on back to wire both amp and cap.after all my truck die agan , had to jump this morning

It may seem obvious to you already, but there's an issue with your American pro amp. It sounds like the amp is staying on all the time. Make sure the REM input only has +12volt power when the key is turned. The remote lead from the HU is supposed to switch the amplifier on, but if you've got a stock radio you might want to tap a fuse in your fuse box to get switched power. If it's turning off like it's supposed to, it has an internal fault making it a constant drain on your battery.

Q:I have a 2001 ford expedition. It has been completely fine until today I started it up which it starts fine but then I noticed my windows wouldnt roll down so I was like ok but then it wouldnt come out of park at all not even when I shut it off and turned the key a little.Additional DetailsOk i figured out that the #15 5amp fuse was blown but when I replaced it, it blew again does anyone know about that?

maybe too much electricity is going to the amp