EKS! ITS BURNING!

[Wil]

ok im pissed. i ignorantly changed the tubes in my cayin ha-1a and apparently they were the wrong ones. i turned on the power and i saw smoke coming out and the smell of burnt plastic. i squeeked like a girl and immediately turned off the power. removing the cover, i discovered that a single transistor on the PCB board was burnt.

Qns1: Is it still safe to run the cayin without it catching fire and burning the sh!t out of me while i listen to my music ( if yes, proceed to qns 2 )

Qns 2: Is it still safe for me to tube roll the cayin without it catching fire and burning the sh!t out of me while i listen to my music ( if yes, thank you very much for your help! )

 

[Wil]

one deperate bump

 

[Harty]

Wil,

Whatever you do, DON'T turn it back on until after you have it properly checked and serviced by an authorised engineer.

It's better to be safe than sorry.!!!

Best wishes,

Paul.

 

[Harty]

Double Post.

 

[Wil]

sign...no music for me today : (

 

[Wil]

Hm.....have another qns, what is the burnt transistor indicative of????

Thanks for the help!

 

[Wil]

is this anything major? only one of it is burnt

 

[amb]

You bet something has gone quite awry with the circuit. That is a burnt resistor, by the way; not a transistor. Resistors burn when dissipating too much power, as a result of either too much current or too much voltage. This is not the fault of the resistor itself, but a manifestation of another problem elsewhere in the circuit (e.g., a short circuit or another failed component).

You should have the amp checked and repaired by a tech before attempting to turn it on again, or else you risk more damage.

-Ti

 

[GWN]

Looks like you burned up a Bias resistor. Probably the result of putting in the wrong king of tube or a defective tube. Get your amp serviced.

 

[braillediver]

What tube is supposed to be installed i.e. what tube was originally in place and worked?

What tube did you put in that caused the problem?

Tube numbers like 12AX7, 6BQ5 etc. We can look up the tube types and see what the operating parameters are and the pin outs.


If we understand the difference between the 2 tubes it might be possible to estimate what damage was done. Maybe.


Mitch