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Re: bush ws7680 tv pcb
Yes it can be replaced if you know the value in ohms and watts and you can use a soldering iron. Resistors normally blow because of excessive current flow sometimes caused by downstream or upstream components that have shorted out or are being overloaded beyond what they are rated at. Sometimes (but rarely) they just blow for no reason.
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Resistors are not sold by voltage, but by their resistance and the max power they can dissipate. The value is usually printed on it as a three digit number (e.g. 473 means 47000 ohms). If you cannot read anything - you said its blown - youre out of luck. You could find someone else with the same PC and look at his motherboard.
Anyway - if a resistor is blown, there is a reason for it. It is not a bomb, so it wont blow on itself. Probably something in your PC is defective, which causes the resistor to blow.
Hi i have been researching your problem and it seems this happens alot on these types of telly the problem people have been having is with the pcb formatter board and once this was replaced it solved the problem but when you get this replaced make sure to tell them to check the resistors leading to the pcb board as a blown resistor can cause the problem with the pcb board so get these checked as well.
I would also replace 2sa992 (2pcs) and 2sc1845 on preamp board- sometimes they look ok when you test them by regular meter. Check 1.2 kOm and 4.7ohm resistors at preamp pcb. Check diodes on output pcb (could be smd type, connected from base of output transistors to emitter i think)
look for the colour code on the resistor and then look it up on a chart ,different values between a silver band and a gold band but the value is the same its just the % tollerance ,gold band is a lower tolerance
it's very difficult to give the exact value of that resistor.,but i can give some tips to find the value of the said resistor .( find how the resistor works, it is a dropping or fusable? if fusable used .47 or 1 ohm resistor if it is a dropping resistor you should make a trial and error .from 100k,10k or 1k.
No it doesn't sound like a resistor, it sounds like you have a short in power supply, you can look for bad Diodes in bridge rectifier,or solder bridge, or transistor short, start from beginning to end. It is definately a short and most of the time resistors open and this will not cause a blow just a dead set.