- Joined
- Feb 25, 2021
- Messages
- 3,153
V = I * RLearn Ohm's law
P = I * V
Those two cover a quite a bit of electronics.
V = I * RLearn Ohm's law
Then should I consider the one that shows continuity is bad and go ahead and replace it? I have plenty new MOV's so it just means remove and replace. Also I have a few resistors that show open . Should I consider an open resistor bad? Thanks for the reply.MOVs are a protection device like a fuse in reverse. Normally they are open (very high resistance)
Really high voltage surges can damage them, as you found out
They sacrifice themselves to protect the circuit
Metal Oxide Varistor
And then pray the diagrams are correct.Credit to you for jumping into this. It is an open ended thing, as reading schematics means knowing what all the symbols represent, and what those things do. Those symbols are not completely standardized so different times and different countries may use different symbols, etc. Doesn't mean you can't make use of elementary knowledge, a multimeter, and basic safety precautions, to do useful work in understanding and fixing electronics.
Yes, shorted MOVs have sacrificed themselves to hopefully protect the circuit. It'll need to be replaced. Relatively common issue when across AC line input.Then should I consider the one that shows continuity is bad and go ahead and replace it? I have plenty new MOV's so it just means remove and replace. Also I have a few resistors that show open . Should I consider an open resistor bad? Thanks for the reply.
BBROYGBVGW = Black Brown Red Orange Yellow Green Blue Violet Gray White = 0 1 2 3 4 5 6 7 8 9reading resistor color codes- both valuable skills
You and me BOTH !I am learning a lot as I go and surely need new glasses and brighter lights.
BBROYGBVGW = Black Brown Red Orange Yellow Green Blue Violet Gray White = 0 1 2 3 4 5 6 7 8 9
There's a common nemonic used to remember that, starts out Bad Boys ... but probably not suitable for a PG site.