Help me read these resistor colours please?

[reessi]

I would like to clarify if I'm reading these correctly, I always thought there was a gap before the tolerance band. Should these be read starting with black as there is no black tolerance band.

So the top one could be black, yellow or brown?, grey, red, red. So 0, 1 0r 4, 8, 2x0 so either 1.8k or 4.8k?

The second:

black, red, purple, grey, gold - 0,2,7,8x0 = 2700,000,000 so 2700Mohm.

They both measure dead short.

Also the red bands could be orange?
The yellow/brown actually looks gold!

Cheers.

[mariushm]

Re: Help me read these resistor colours please?

The first could be

black - red|orange - violet|blue - silver - gold = 0 - 2|3 - 6|7 - x 0.01 - 5% .. probably 0.27 ohm 5% 1w-ish?

The other is weird... no idea.

[Andrew F. Ali]

Re: Help me read these resistor colours please?

These resistors are good...nothing is wrong with them......Resistors DON'T go by shorting.....They DO go bad by open circuit or INCREASED resistance.

[reessi]

Re: Help me read these resistor colours please?

Ah thanks, that looks right for that one. Anyone solve the other one and a third one I am mythed by. I took another photo of these 2.

Top looks like - brown, gold, silver, green, red.
Bottom one looks like - black, gold, silver, orange, orange!

Both test short but I was already wrong about one, maybe really small again?!

Cheers.

[reessi]

Re: Help me read these resistor colours please?

Thanks Andrew but can you explain the colours on the other 2? Would be handy if I actually understood what they should be, they are probably really small then like the first one but the colour scheme doesn't make sense to me?

Cheers,

[petehall347]

Re: Help me read these resistor colours please?

those resistors are most likely inductors ..now see how many mh they are .
plus see what id they have on board and in schematic

[reessi]

Re: Help me read these resistor colours please?

I'm not sure thats right as on the board they are labeled R with a no. not L. Also I just had a look at inductor colour charts and none have more than 4 bands? I'm not an expert though!

Cheers.

[reessi]

Re: Help me read these resistor colours please?

I couldn't find the schematic! Its a plasma tv, the service manual has all the other boards but not the psu board. I was looking for a short as it gets very hot! And doesn't turn on.

[petehall347]

Re: Help me read these resistor colours please?

i have never seen a resistor go short and never expect one to .

[petehall347]

Re: Help me read these resistor colours please?

most odd .. not military obviously . no silver band on end .. resistor codes dont make sense to me .

[sam_sam_sam]

Re: Help me read these resistor colours please?

I googled ( 5 color band restistor ) and found this

http://hirophysics.com/Labsheet/resi...sis-codes.html


From this cart the it looks like one of resistor is 0.62 ohm

I hope this helps

[vinceroger69]

Re: Help me read these resistor colours please?

whats the psu number maybe we/have can locate a shematic

[budm]

Re: Help me read these resistor colours please?

Ah thanks, that looks right for that one. Anyone solve the other one and a third one I am mythed by. I took another photo of these 2.

Top looks like - brown, gold, silver, green, red.
Bottom one looks like - black, gold, silver, orange, orange!

Both test short but I was already wrong about one, maybe really small again?!

Cheers.

Top one is 0.15 Ohms (It looks like Brown not red to me) 5%
Bottom is 0.33 Ohms 5%
The black band should be for Temp Coefficient.
These MOX Flame proof resistors are not marked the same as regular resistors.

[budm]

Re: Help me read these resistor colours please?

Disregard to reply.

[reessi]

Re: Help me read these resistor colours please?

Ok, that makes more sense budm. They read like 4 band and the 5th could be like you say co efficient.

Why did you say to dis-regard?

To vinceroger69 the psu is EAX65359511 from Plasma LG 50PB560B. I have created another thread on the repair if any of you can help.

I think the resistors are solved or at least we know why they tested short because they were such low values!

The PSU I have now tested on the bench and forced on with a resistor and appears to be fully working outside of the set!

Cheers.

[budm]

Re: Help me read these resistor colours please?

"Why did you say to dis-regard?" I double posted the answer.

[vinceroger69]

Re: Help me read these resistor colours please?

Ok, that makes more sense budm. They read like 4 band and the 5th could be like you say co efficient.

Why did you say to dis-regard?

To vinceroger69 the psu is EAX65359511 from Plasma LG 50PB560B. I have created another thread on the repair if any of you can help.

I think the resistors are solved or at least we know why they tested short because they were such low values!

The PSU I have now tested on the bench and forced on with a resistor and appears to be fully working outside of the set!

Cheers.

Well if the psu is testing ok when forced on etc (do you get all the voltages?) that should be ok so time to do more fault finding on the other boards

[reessi]

Re: Help me read these resistor colours please?

Yes all voltages! I was originally looking for a short on the psu as gets hot when on in the tv. Then got confused by the resistors but that was a red herring.

I am looking at the other boards now. Check my other thread on this tv if you can help.

Cheers.

[vinceroger69]

Re: Help me read these resistor colours please?

ok will have a look
https://www.badcaps.net/forum/showthread.php?t=61852
Have you tried running the test patterns if you can on this set?

[Andrew F. Ali]

Re: Help me read these resistor colours please?

top one is 0.15 ohms (it looks like brown not red to me) 5%
bottom is 0.33 ohms 5%
the black band should be for temp coefficient.
These mox flame proof resistors are not marked the same as regular resistors.

+100