IMPORTANT: WHILE
WORKING WITH TV OR ANY CIRCUIT WITH HIGH VOLTAGES IT IS WISE TO USE AN
ISOLATION TRANSFORMER FOR YOUR SAFETY! (I need to buy one soon!!)
SYMPTOM: Doesn't start. On last operation, there was smoke coming out from inside.
FAULT DIAGNOSIS:
- the smoke thing indicated that something definitely burnt, could be the motor coils or the wire insulation; here's an inside picture-
- before uninstalling the motor out of the box which is very cumbersome, checked all the external joints
- there was a prolapse at one end of a wire at a tag block (which generally occurs on overheating); on checking the same, found there were signs of burns on the wire and also there was a lot of oxide layer on the wire; washed all the connectors with iso-propyl alcohol and soldered the wire ends where necessary and screwed them to their respective positions
- there were some other dry joints which were resoldered
- after doing all these, plugged in to the mains supply to check if the problem was this small; and yes, it worked; i just couldn't believe my eyes; had a similar problem some 11 years back when we send it to repair and they charged ₹700 (could have had a deuce cricket bat!!)
MORAL OF THE STORY- before sending your faulty gadget for repair, try finding what went wrong by atleast having a look at the inside; the problem could be as small as this!
SYMPTOM: Doesn't start. On last operation, there was smoke coming out from inside.
FAULT DIAGNOSIS:
- the smoke thing indicated that something definitely burnt, could be the motor coils or the wire insulation; here's an inside picture-
- before uninstalling the motor out of the box which is very cumbersome, checked all the external joints
- there was a prolapse at one end of a wire at a tag block (which generally occurs on overheating); on checking the same, found there were signs of burns on the wire and also there was a lot of oxide layer on the wire; washed all the connectors with iso-propyl alcohol and soldered the wire ends where necessary and screwed them to their respective positions
- there were some other dry joints which were resoldered
- after doing all these, plugged in to the mains supply to check if the problem was this small; and yes, it worked; i just couldn't believe my eyes; had a similar problem some 11 years back when we send it to repair and they charged ₹700 (could have had a deuce cricket bat!!)
MORAL OF THE STORY- before sending your faulty gadget for repair, try finding what went wrong by atleast having a look at the inside; the problem could be as small as this!
No comments:
Post a Comment