Cd431 charger dead need diagham for resistor value burn

A burned out resistor means too much power has flowed and burned it out.
you need a schematic to find the resistor value but also what other parts have blown as I can guarantee just replacing the resistor would just mean another burned out resistor.

Resistors R1, R2, R3, and R4 are arranged in a circuit as shown in the figure above. The direction of positive currents I1, I2, I3, and I4 through the resistors are shown. (i.e., negative current values correspond to currents in the opposite direction to that shown above). The values for the resistors and the batteries in the circuit are: R1 = 100 ?, R2 = 200 ?, R3 = 30 ?, R4 = 400 ?, V1 = 4 V, and V2 = 12 V.

WASHINGTON, D.C. - Consumers should stop using this product unless otherwise instructed.
It is illegal to resell or attempt to resell a recalled consumer product.
Recall Summary
Name of Product: Ryobi P113 Dual Chemistry Battery Chargers
Remedy: Replace
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ET Monday through Friday or online at www.ryobitools.com and click on Important Safety
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Let us use a bit of logic to resolve this... I have an Axiom but it would be a lot of screws to take out to get to the part... so let us think about this. The resistor value starts with a "1" and we know it is 5% tolerance (gold). we know the resistor burnt up with likely 5 volts on it... Value could be 1000 ohms, however the voltages present (12 volts max) would NOT have burned up a resistor of 1000 ohms. The USB area is mostly 5 volts and across 100 ohms is only a quarter watt... not enough to really burn up a resistor... First thing is to MEASURE that the resistor s open... in spite of being burned, it MAY still be OK... these resistors now usually either open or remain close to their value. The resistor ALSO may be a fusible resistor intended to act as a fuse... Is the resistor open or not? is it near a resistance with a "1" as the first digit? If it is not open I suspect it is not all of the problem. In that case, look for a burned circuit trace on the board. If it is open, then MEASURE the voltage across the resistor with the power applied. If you find 5 volts, then it MIGHT be a 10 ohm used to limit the USB current to 500ma. Get back to me with your findings... I have unraveled many of these things...

Hello Gio, Hi, a burned resistor is usually caused by a shorted part like a semiconductor or regulator, there are two things you should do, find the value of the resistor and what caused the resistor to burned, for the Resistor, the value is usually written on the board, If not you can find the value on schematics diagram (which is usually hard to find, but if you have one, fine), and on the same working model (very remote a possibility). IF this are not available, you now need the assistance of a technician.

videocon crt tv vdf vc 232 is dead and fuse burns when swicth on

I re-drew the schematics from the PCB-layout and did some backward engineering to determine the resistor value. The machine is now again in excellent working order.

brYze,

take a look and get the resistor number printed on the pcb. i might be able to give you what you're asking for.

Francis

R14109=750ohms 5% 1/4w (Resistor(750r5%.25W/R14109/179317) There is much more likely wrong with the TV. Resistor don't normally burn out with help, say, without a failing flyback transformer and possibly taking a transistor or two with it. If you need the manual, go to http://www.samswebsite.com/photofact/pf_search.asp and type in "F31317" into the search field, you will several listings. If you decide to replace it yourself, here's some more part numbers in case you need them. Model: RCA\F25422TX41 Symptom: Dead Necessary parts: Transistor(Q14401) Main Voltage regulator Q14101 Resistor R14109 open. Research indicated the flyback transformer most probably bad \\CTC203AC4\HOT/D2578(Q14101/242224)* Flyback(14536119A/T14401/244229)* Main reg(P9NBSO/Q14101/244223) \Reg(MPS8599/Q14102/147665) Resistor(750r5%.25W/R14109/179317) Reg(MPSA06/Q14103/232218) Hope this helps you. ZT3000 "Beta tester of "0"s and "1's"