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Need value for resister r571 - Televison & Video

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Need the model number of your set to determine the value of a given resistor.

Posted on Jul 15, 2008

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Posted on Jan 02, 2017

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You will need what the factory resistances valuea re supposed to be, cold. Then use a high quality ohm meter with 3 decimal places, disconenct all wires off the stator. Check each wire with a meter to the ground frame, if there is any value, stator is shorted. Then check between stator wires ie L1 L2 and compare resistance value with factory values.

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My 1993 firebird was running fine after changing ignition switch and now it will not crank? told it was the vats key mod. need to know how to bypass it and where its located


Is there a pellet in the key. This type can be bypassed the pellet pushes to resistors outward to a given value from #1 to #14 if you can read key resistance then go to a electronics store a by a resistor that value now crawl under dash by gas pedal you will find a orange cord with two white wires in it place resistor across both wires and cut wires off leaving the ones going up steering column open. turn key on if security light is flashing wrong resistance value. try again. a haynes manual should have all resistance values but key code.

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chris...

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What does it mean when I test and get a clear signal and then it fades to nothing?


Hi -

First, make sure the battery in the tester is good. If unsure of the batteries charge state, replace them (requires {4} IDEAL# 61-201,
IEC #LR44, or NEOA# 1166A) before continuing.

What you're describing sounds an awful lot like a testing of a capacitor. If you were to connect an analog ohm meter to a capacitor, the needle would indicate a very low resistance value and gradually swing to a very high resistance value. it would not take more than a few seconds to go from low to high indication. Use of a digital meter wouldn't show this very well, as the resistance value is constantly changing - rendering an actual numeric value impossible to display.

Once the resistance value has reached the high value on the meter, swap the polarity of the leads, and it should read low again - and climb to the high value once more. This will happen each time the leads are reversed.

You can view the manual here.

I hope this helps & good luck!

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IN POWERCOM UPS 1500VA I NEED THE VALUE OF THE RESISTANCE R74 , R67, R51,AND R49 THANK YOU


first u have Chaque the color coding of resistance and u fine exact value of resistor.

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My TP100 snare pad is very glitchy. Often when I hit it, it makes no sound at all, or it misses hits. I suspect something is wrong with the small sensitivity dial (not the big red dial), because the...


The dial could have a desoldered pin or oxydized slider contacts. Try to resolder the pins, but if that doesn't solve it then you would need to disassemble and clean the internal slide contacts on the dial which can be a bit difficult, so the alternative is to replace the dial if you can find a spare one.

To bypass the dial (with fixed resistances) you need to know the resistance at each side of the dial when it is in the position that suits your needs (connect the snare to a working input, set the sensitivity as needed, mark the position of the dial).

The resistance can be measured with an ohm meter.
To be sure that the measuring will be accurate, it is ok to remove the dial from the circuit board (adjacent components may affect the measured value).
You should do the measuring on a dial that is good.

After you've removed the dial, set it to the position that you marked previously.

Measure the resistance between left and middle pin of the dial - this will be the value of the fixed resistor which you need to connect to the left and middle hole on the circuit board.
Now measure the resistance between middle and right pin on the dial - this will be the value of the fixed resistor which will be connected to the middle and right hole on the circuit board.

Now you need to get resistors which have the values that you've measured and solder them in place of a bad dial.

It is likely that the measured value will differ from the standard fixed resistor values. To achieve the exact measured value, you can connect two or more fixed resistors in series, just make sure that the added value of the fixed resistors for each side is the same as the measured value on each side of the dial.

Now you need to solder the fixed resistors to the circuit board and the modification is complete.

If you actually decide to do this modification and you're unsure about anything, just post me some feedback, i'll be glad to help.

Anyway, hopefully it is just a desoldered pin that you need to reflux.

Regards,

Triarcuate

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Pot broke off


Use an ohmmeter to read the value. Even if the resistance element has been broken you can read by touching the remaining part and estimating the total resistance by what is left.
NEXT look for an A or B on the can as this is the taper type. You may also find the resistance marked there like 50K or it might be something like 1003 (100K ohm)
You need to match the resistance AND the taper.

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2 Answers

Width problem


Sometimes you will need to reinforce the whole circuit with new soldering metal as well. Mass produced circuitry sometimes uses very little of the stuff or uses soldering metal of poor quality.

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