Can anyone help decipher what resistor this is? R1 - I am struggling to figure out what the resistor is as it is blown and the colour bands are burnt:
Circuit board has written on it
It’s the power supply/control board out of a Homecom 823-010V72 air conditioner.
Additional photos of circuit top, bottom, blended and some symbols:
I have the same board in a Meaco air con about to repair. My resistor's colours are red red black gold black and on a meter it measures 22 ohms.
A grey resistor with a black band is almost certainly a wirewound resistor used as a fuse.
Looks like maybe red-violet-black-gold (27 Ω)?
Nonetheless, like any other fuse that exploded, something else on your board failed and drew too much current. Replacing this resistor with a similar part will likely burn it up in a similar fashion. Replacing it with a higher-wattage part is not a good idea and may result in something else exploding in a more spectacular fashion.
Looking at your photo it may not be a crispy critter but definitely got overheated. I would measure the resistance and if reasonable purchase another one with maybe 2X the wattage rating of the one there. If it is blown contact the factory to see if you can get a schematic. If possible see if you can find another unit and take a picture, be sure to note the colors. Of course you could purchase a replacement.
