checking of SCRs

[sangel]

any chace I can check SCRs the same way I can check transistor or diods, with multimeter ??

I have a flat pc monitor that is not working, it is turning on for a few miliseconds and then goes of for a few seconds and so on. I check most of the stuff there, and found one SCRs were I lower the gate resistor it increase the time that monitor is on

this is SCRs that I have there, MCR100-6

resistance between G and A is different that between G and C (not like in other SCR'S that I have there, were it is the same

I know I can buy it on ebay for about 6$, but still it takes time to package to arive from china


Any wat I can check this SCR's by "regular" methods ?

 

[RCinFLA]

SCR need two diode drops to keep them latched.

Most multimeters do not provide enough voltage in ohms function to keep SCR's latched. The voltage present on multimeter leads is usually dependent on what ohms scale is being used.

 

[sangel]

my multmeter have a special palce for checking diods, so I have no problem checking diods or transistors

 

[sangel]

Any idea folks ?

 

[Mr RB]

Connect it to 12v through a 12v light bulb. Then touch a 470ohm resistor from 12v to the gate. If the SCR works it will light up and stay lit.

 

[sangel]

thank u, connect resistor from a plus or minus ?

 

[BrownOut]

Plus. Sorry, Mr. B.