Resistors R504 and R507 are burned, values are unknown.This is a Boka color monitor.I need the values of the resistors.

have you repaired the component that burned these resistors out? if not then you cannot replace them as they will just cook again.

Are there any colored stripes on the parts? I can read color codes on resistors, and tell several things about them by the stripes ... if you can tell what the colors were or are.

Enter the colors in this calculator to determine the values you need.

Please repost with make and model. Is it ACER or FUJITSU? Hard to help without details for us to do the research.

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

The value = 0.21 ohms 5% tolerance
Use this WEB site to work out the value of the resistor.
http://www.smpspowersupply.com/resistor/resistorcolorcode.html
This WEB site gives you the color code values for resistors.
http://www.google.com.au/images?hl=en&q=resistor+colour+code&um=1&ie=UTF-8&source=univ&sa=X&ei=YHRsTfSsK5C2vQPA353UBA&ved=0CCsQsAQ&biw=1024&bih=416

Sounds like your over half way there lol..
You now need to check the resistors positioned near the convergence ic's. They are your likely problem and go bad often when the ic's fail.

They are normally about 2watt and the values will vary but normally are like .10 ohms to 1 ohm.
I cant find a schematic to give you the exact values and locations but if these resistors measure off value at all you need to replace them with the exact value of the originals.

Heres a link to resistor color code guides just in case the value numbers are not printed on the resistors
http://www.dannyg.com/examples/res2/resistor.htm

Good Luck!!!

Depending on the resistor, the values for a resistor is color coded, meaning that there are a couple of lines of colors and each color line represents a value. Do a google on Resistor coloring chart and you might find your answer. If the resistor is a surface mount one and very tiny, you might be out of luck as these are too small for the manufacturer to print the part number on. Only the manufacturer has that part number and can be very hard for you to contact them about.

check on the board to see if there is a resistor that looks similar, 90% of amps amps are matched in there design, meaning the left side is usally a carbon copy of the right, so if you look at one side and there is a resistor that looks like it's in the same spot on the other side, good chance thats the same one, read the colors off the one thats not burnt up. resistors come in different wattages,1/8,1/4 1/2 up to 10 watts, each wattage is a different size, most of the ones you see in the amp are 1/4 watt but some are 1/2 and 1/8. some on the output are 2 to 5 watt, but those are generally 10-18 mm in length, they are big ones you cant miss those. so once you get the color code, read the colors, ex red,gree,brown,last line is either silver or gold, that will tell you the resitor value. then google resistor color codes and then you can match the color sequence with the value codes, and that will tell you the value you need in ohms but then you have to get the size 1/4 watt resistors are generally about 6 mm in legnth, im measuring the actual part of the resistor not including the metal leads, just the body, so if its larger its probally a 1/2 watt if smaller its an 1/8 watt, 1/8 watt are about 4 mm. now go buy the resistor, but you might find it that tough, if its a common value radio shack might have it, but resistors are so cheap, pennies for a handful, good luck on your search.

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

find the change value capacitors and resistors in the convergence section!