cant identify component in battery charger

[joeninety0]

I have a ring rcb312 battery charger and what i think is a voltage regulator on the heat sink has burnt out. the component looks like a triac ( its a long time since i was at college) and have been told its prob a voltage reg. the numbers on it are 70t03gp and 822041 . i have searched the internet to find a data sheet but cant find any reference to either number that means anything to me . any ideas would be much appreciated thanks

 

[shrtrnd]

A picture would probably help.
This SOUNDS like your voltage regulator burned-up. The TO-220 style package for voltage regulators looks like a lot of the packaging for some TRIAC's, so that's probably what you're thinking of. Problem is 70t03gp is either a proprietary number owned by the manufacturer of your battery charger, or your device is so burned you can't tell for sure.
Example:
7808 is a positive 8V voltage regulator.
If your burned device WAS a 7808 (there is no 7803, 3V regulator).
Since you think you see a small 't', I'm guessing you can read the number correctly.
I hope somebody can help you with this better than I can here.
If it's a proprietary number, you'd need a working charger to read the working voltage on,
so you'd know what the regulator value is. Manufacturers usually won't tell you what
their proprietary numbers are.
Good luck.

 

[joeninety0]

there are actually 2 similar components on the heat sink . the one on the left is the component in question . thought they were the same but after cleaning the right hand side one that is marked NF710 MBR2045CTG. they both have scorch marks . ( ive just noticed the pcb ismarked below each component as well the left is marked m and the right d ) .I assume the d is for diode so maybe a zener to regulate the supply but no idea what the m stands for.

 

[davenn]

unfortunately the pic is too dark and blurry to pic out any useful info
try again and get it under some decent light

cheers
Dave