Hi guys,
This is my first time posting on this forum - I was wondering if I could get some help in determining what resistor value I need to repair this bass amplifier as well as if the new transistors I purchased are any good.
A little backstory:
It's a Drive CD300B Bass amplifier "all in one" unit. Years ago I had lent it to a friend, and when it was returned to me, it no longer worked. After measuring all the resistor specs, it came down to the transistors (D2059) - there are 2 of them on the head unit. Upon measuring their values, they were out of spec and faulty, which I believe was due to the amp being left on for days on end by my friend.
I purchased some new transistors from china and they finally came. I noticed that the "Y" value printed on the transistors were all different from the ones that were already installed on the board. The new ones had a range of Y values, whereas the board had a Y value of 319.
Anyways, I replaced the transistors, but due to a faulty solder joint by me, i shorted them out resulting in a resistor going up in smoke. Normally i would just replace the resistor and try again... but the resistor's values (usually written in colored bands on the resistor) had burned up. I no longer know what the value is, so I dont know what to use in its place.
I have read that the resistance values of resistors go up after being exposed to extreme heat from a short - the other resistors in the neighborhood of the one that melted down are all over the map..
Can anyone help me in determining what the value is? Could i use one with lower resistance value? is there a generic resistor that can be used?
This is my first time posting on this forum - I was wondering if I could get some help in determining what resistor value I need to repair this bass amplifier as well as if the new transistors I purchased are any good.
A little backstory:
It's a Drive CD300B Bass amplifier "all in one" unit. Years ago I had lent it to a friend, and when it was returned to me, it no longer worked. After measuring all the resistor specs, it came down to the transistors (D2059) - there are 2 of them on the head unit. Upon measuring their values, they were out of spec and faulty, which I believe was due to the amp being left on for days on end by my friend.
I purchased some new transistors from china and they finally came. I noticed that the "Y" value printed on the transistors were all different from the ones that were already installed on the board. The new ones had a range of Y values, whereas the board had a Y value of 319.
Anyways, I replaced the transistors, but due to a faulty solder joint by me, i shorted them out resulting in a resistor going up in smoke. Normally i would just replace the resistor and try again... but the resistor's values (usually written in colored bands on the resistor) had burned up. I no longer know what the value is, so I dont know what to use in its place.
I have read that the resistance values of resistors go up after being exposed to extreme heat from a short - the other resistors in the neighborhood of the one that melted down are all over the map..
Can anyone help me in determining what the value is? Could i use one with lower resistance value? is there a generic resistor that can be used?
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