Your children should not be anywhere near the area where you repair amplifiers. Lead is toxic to children and can cause brain damage or developmental problems. Simply touching the components puts them at risk.
No clue on the rectifiers.
Seriously... keep the children away from the work area.
https://www.google.com/search?hl=&q..._enUS452US452&ie=UTF-8&aq=0&oq=lead+toxicity+
No clue on the rectifiers.
Seriously... keep the children away from the work area.
https://www.google.com/search?hl=&q..._enUS452US452&ie=UTF-8&aq=0&oq=lead+toxicity+
I think i found the problem.. Solder bridge between the legs of 1 driver..
Im gonna replace the gate resistors anyway since they look burnt but measure fine just so it doesnt look like a cheap repair job...
The 22 ohm resistors i put in that i wasent sure of the value 1 supply it worked fine the other supply it got red hot should i try using a 2 watt resistor to see if it works?
Im gonna replace the gate resistors anyway since they look burnt but measure fine just so it doesnt look like a cheap repair job...
The 22 ohm resistors i put in that i wasent sure of the value 1 supply it worked fine the other supply it got red hot should i try using a 2 watt resistor to see if it works?
The 22 ohm resistors just keep burning up..
the resistor in question 1 side connects to the middle leg of the IRFZ44the other side connects to a winding on the transformer..
There are 220 ohm resistors next to the gate resistors what connect to the 3rd leg of the fet..
So any ideas what i could try since the 22 ohm resistors that connect to the middle leg keep burning up and the fets keep heating up in both supplys?
the resistor in question 1 side connects to the middle leg of the IRFZ44the other side connects to a winding on the transformer..
There are 220 ohm resistors next to the gate resistors what connect to the 3rd leg of the fet..
So any ideas what i could try since the 22 ohm resistors that connect to the middle leg keep burning up and the fets keep heating up in both supplys?
Back to having problems with the Drive circuit..
I installed 4 1K resistors again 1 in each bank..
Scope is set to .2us 2 volts div
First pic is the waveform on the gate pad for both supplys..
2ND pic is the waveform on pin 9 of the 494
I installed 4 1K resistors again 1 in each bank..
Scope is set to .2us 2 volts div
First pic is the waveform on the gate pad for both supplys..
2ND pic is the waveform on pin 9 of the 494
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