CDB3Series Circuit Breakers

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Q: both these components stopped working suddenly on my automatic 2001 toyota Rav4 today. I have had no prior problems until this morning, now both arent registering anything at all. Any ideas what the problem might be, and how much its going to set me back financially to fix it?: if the gages read nothing i would start by checking fuses.

Q: Blown Kenwood KDC-P5028 CD Reciever?I have a Kenwood KDC-MP5028 CD player. I was installing the system and everything was going fine. The wiring harness has the yellow cable missing which I think the the 12v. I attatched a wire and hooked it all up and everything was working fine. When I pushed the unit into the dash the wire cameout and it touched the black ground wire. I heard a pop and noticed that the unit was smoking a little bit. Now my unit will not power back on. The fuse is still good so thats not the problem. The radio fuse is also intact. Does anyone know what the problem is? Is there an internal fuse I dont know about? Your help wil be much appreciated. Im also trying to avoid taking it to a repair shop because I know they are going to charge me an arm and a leg. Thanks, Johnnie: rutrn to where you bought it tell them its defective

Q: 1991 Honda Civic Si Hatchback. The fuse is hot with car off. It gets an immediate ground short when I turn it on. Wiring schematic says this wire goes directly to ECU. So if it were shorted against body somewhere, it would blow fuse key on of off.Tomorrow I will trace wire directly to ECU and clip it off. If it is ungrounded until I turn on key and then goes to ground when I turn on key, is that sufficient proof that my ECU has an internal short and is junk to be replaced.I hate replacing parts then finding that was not the problem.: Be careful bec some schematic pgs will only indicate a splice number and not show you that the wire you're trying to trace splices into other wires feeding other devices etc and any other device connected to that same feed either before or after the ECM could cause the fuse to blow.A real good way to usually that either too much load is on a fuse or it is the wrong amp fuse or there is a short is when the fuse blows black.From what you're saying I'am gathering that in fact the fuses are blowing black.Remember that a relay that is over loading or shorting out internally would also cause the fuse that feeds it to blow. Like in any circuit if a certain pin of a module is a input or output voltage the internal circuit would read a certain resistance if you used a ohms meter to the pin and ground and if you got a ohms meter reading that showed a fully closed circuit this would suggest that the ECM has a fault in that circuit.Tests like these are hard to perform bec you have to have the factory specs on such circuits and most don't offer such info in most manuals. Hope that helps and best of luck.By the way trace any wires going to any related relays and going to the ECM bec on an old vehicle like that the wire might be cracked/dry and have bare spots or melted spots especially the harness runs close to any hot spots like the engine etc.Remember that even the voltage regulator can be shorting out. Note if I was trouble shooting that problem I'd use a reset the same amperage as the original factory fuse and I'd use alligator clips/ mini jumper cables to temporary attache the reset to the fuse socket, plus you might use a male plug in flat connector so it can fit into the fuse socket connectors, plus you could solder the wires with the connectors to the reset.Try moving/slightly tugging lightly the different harness's one by one and then then try starting it, if the rest goes it will rest once it cools down a bit.

Q: And my truck still want start without jumping that wire: Always double check fuses. A poor connections could be the problem but I would be suspicious of the wiring. If the wires run under the truck, make sure they aren't damaged from debris or rubbing on other components. Try jumping at the relay +. If it runs while jumped at relay +, then you know its a problem before the relay (ign switch wiring, fuses, etc)

Q: I drive a '97 Dodge Dakota. I've had it for 3yrs now. When I first got it from my G-pa,the headlights were acting up at that time which was like October/November '06. Got a new switch and that did the trick. Well apparently not because the same problem came right back. And when the switch was pulled out we flipped it over to see if there was a problem underneath it. Well you could clearly see one of the terminals was fried. So again we replaced the switch. Problem solved. WRONG. The same problem has come back to haunt me now,2yrs later. Now as before,the headlights would come on and as I drove they would flicker on and off,though if the high beams were switched on or held on,I would have no problems. Now they don't flicker on and off,I pull the switch and they don't even come on. I can hold in the high beam switch and they stay. There is the scoop. Any tips/help would be greatly appreciated.: Cheack ground wire

Q: Four electrical components are connected to a 120v household circuit. The light bulb dissipates 100W, the electric heater 1800W, the stereo 350W, and the hair dryer 1200W. The fuse protecting the circuit is a 20A fuse. Will the fuse blow? Justify your decision with calculations and explanations.: Total power dissipated 3,450W. (3450/120) 28.75A., so the fuse blows. The powers are additive, then power in watts (voltage x current), so dividing power by voltage will give the current figure. W EI, I W/E. I is current in amperes, E is voltage, in volts. What more can I say?

Q: Help me please. My son installed a battery into his 99 ford escort. However he attached neg to pos and pos to neg. Can this fry out the alternator. Or could it simply be something electrical. There was a wire left off, going to somewhere. And a black wire coming from the internal fuse box.: Every vehicle has a main fuse, or fusible link to avoid damage to electrical components. Check EVERY fuse under the hood, and inside the vehicle. Chances are the Main fuse (usually 80-120 AMP) is blown, and possibly a couple others here and there. If the vehicle has fusible links (a loop, or section of wire specifically made to burn away), then replace them with new ones. I don't know where the other wires are you are referring tobut if you don't know where they go, hit a junkyard, and use the same type of vehicle as a reference.

Q: I made one of those DIY laptop coolers and forgot to insulate the two most important wires (which were touching causing short circuit) Plugged it into my laptop which is rendering and suddenly everything just turns off. Is there a fuse or a component I can replace? Tried everything, took out the hard drive. If it is unrevivable what parts will still work?Laptop: asus pro50seriesCPU: intel core 2 duo t5750Hard drive: seagate 250gbRam: 2gbAny help appreciated. Really urgent. What parts do I need to change?: Sorry, there is very little good news. You fried the motherboard with that short circuit, and replacing that will probably cost you the same or more than buying a new laptop. In the worst case scenario, it is quite possible that your CPU and RAM got cooked as well. The only good news is that your hard drive may still be okay.

Q: A couple of years ago I installed after market speakers in the rear of my car and kept the stock speakers in the front. I connected an amp to the rear speakers. It was working fine but one day I drive my car and notice only the front speakers (the stock ones) are playing. I pop open the hood and notice the amp wire was disconnected from the fuse going into the battery. I reconnect them and turn on the stereo but still there is no sound to the rear speakers. I can hear the tweeters I have make a fuzzing noise, though. Anyone have any ideas on what the problem is?: Something electrical has happened with the amp. Since it was disconnected, there was likely a sudden instability in the electrical flow, at best only blowing a fuse, at worst blowing a critical internal component in the amp. Check all fuses, if you don't find any blown ones, check the ground cable. Check fuses for the car too, if the hot touched a direct ground, it may have popped one. If still nothing, you are likely looking at serious damage to the amp. If it smells like crispy, it is crispy.

Q: Algae in the genus Caulerpa typically grow to a length of over half a meter and have structures similar to stems, leaves, and roots. Reproduction occurs when adults produce sperm and eggs that fuse to form offspring. Each adult Caulerpa consists of just a single cell, however. Which of the following statements is true?1. Caulerpa violate both the pattern and process components of the cell theory. 2. Caulerpa violate the pattern component of the cell theory - that all organisms consist of cells. 3. Caulerpa violate the process component of the cell theory - that all cells come from preexisting cells. 4. The existence of Caulerpa is consistent with the cell theory.ONLY IF YOUR 100 PERCENT POSITIVE!! this is an open notebook quiz question and its not in my book! so only if your 100 % SURE PLEASE!!!!: The Caulerpa consist of one cell, so #2 is incorrect. They reproduce by making egg and sperm cells, which fuse to make a new organism, so #3 is incorrect too. By default, #1 is incorrect, leaving #4.

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