12-12-2021, 09:22 PM
Whilst thinking about the IF slug problem, I have developed a technique to avoid them falling off.
Providing that they are not already rattling around, I hold the set so that the adjusting brass carrier screw is head down and heat it with a soldering iron until all the wax runs off and then a little longer to ensure that any wax that had gone into the former and locked the actual slug also runs out.
I have found that this excess wax is what holds the slug and causes it to twist off and break free if the adjuster is turned without unlocking it first.
Many of these transformers were very heavily waxed, far more than necessary to prevent vibration adjusting the setting.
I too like the DAC10 for the same reasons, bakelite front and back shells and push buttons. The speaker is a compromise however. This last one had 2 new correct 3.15v bulbs already installed, and the glass of the old ones still rattling around behind the diffuser!
Sam.
Providing that they are not already rattling around, I hold the set so that the adjusting brass carrier screw is head down and heat it with a soldering iron until all the wax runs off and then a little longer to ensure that any wax that had gone into the former and locked the actual slug also runs out.
I have found that this excess wax is what holds the slug and causes it to twist off and break free if the adjuster is turned without unlocking it first.
Many of these transformers were very heavily waxed, far more than necessary to prevent vibration adjusting the setting.
I too like the DAC10 for the same reasons, bakelite front and back shells and push buttons. The speaker is a compromise however. This last one had 2 new correct 3.15v bulbs already installed, and the glass of the old ones still rattling around behind the diffuser!
Sam.
Boater Sam.
