Help Identifying resistor-like part

C

chiques

New Member

• Sep 14, 2009

• #1

Hello everyone,
I'm trying to learn to repair switched power supplies without schematics so I'm finding a few parts I don't have references to. Would anyone be able help me identifying this resistor like part?

**broken link removed**

 

Nigel Goodwin

Super Moderator

Most Helpful Member

• Sep 15, 2009

• #2

You need a circuit diagram, or an identical PSU to compare - it's damaged beyond reading.

 

Mikebits

Well-Known Member

• Sep 15, 2009

• #3

Looks like my wife's cooking

 

microtexan

New Member

• Sep 15, 2009

• #4

wife's cooking.

Mikebits said:

Looks like my wife's cooking

Click to expand...

Why does your wife cook resistors?

 

K

kpatz

New Member

• Sep 15, 2009

• #5

Looks like a cooked resistor. Must be my mother-in-law's cooking.

Is there anything underneath that plastic cover? That could just be an insulator. Have you tried measuring it with an ohmmeter to get an idea of what value it might have been?

Based on the color code, its value starts with "2".

 

C

chiques

New Member

• Sep 15, 2009

• #6

I tried measuring it but it's basically an open circuit. I'm not sure if it's a fuse or some sort of power resistor.

 

audioguru

Well-Known Member

Most Helpful Member

• Sep 15, 2009

• #7

ImageShack is asleep so I couldn't see the photo.
Please post the photo here instead.

 

C

chiques

New Member

• Sep 15, 2009

• #8

Attatching JPEG on FORUM

See below.

 

Attachments

• mystery_part-2.JPG

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audioguru

Well-Known Member

Most Helpful Member

• Sep 15, 2009

• #9

Why is the burnt resistor wearing a hat?

 

B

bryan

Member

• Sep 15, 2009

• #10

Well,I think the first number in the value is a 2

 

Mr RB

Well-Known Member

• Sep 15, 2009

• #11

I though it was a resistor with a heatsink. They were used with a little tinned steel sink on top to get a higher power dissipation in a package with a small PCB footprint.

But since the "hat" seems melted I guess it's plastic (ie heatshrunk plastic tubing)?? It's probably just an insulator on top of a normal resistor.

Good luck working our the resistance value.

 

Boncuk

New Member

• Sep 15, 2009

• #12

I go along with Mr RB.

Most probably it is kind of a safety precaution avoiding to touch an AC-live part in the circuit.

A schematic would be helpful finding out the value of the resistor.

Boncuk

 

rmn_tech

Member

• Sep 16, 2009

• #13

It's also possible that the red ring is not the first ring but the last i.e. 2%