Hello everyone,
I am a new member to the forum - just registered today.
I have a Heathkit A-7D Audio Amp I just purchased and I understand that there are some modifications that have been made to it over the years. Would anyone in the forum have any knowledge as to where I can find those mod's. Thank you, I would appreciate it.
Bill
KI7ZAD
I am a new member to the forum - just registered today.
I have a Heathkit A-7D Audio Amp I just purchased and I understand that there are some modifications that have been made to it over the years. Would anyone in the forum have any knowledge as to where I can find those mod's. Thank you, I would appreciate it.
Bill
KI7ZAD
I would just add that when asking for technical advise it is always helpful to add the schematic for the device to the first post. Most users don't have the schematic for every device close to hand and that means they must search for it on line. If you provide the schematic, even if you have to search for it, then more people can respond.
This is a single channel, mono power amplifier with an input selector and level control.
Due to age, replacing the electrolytic capacitors and coupling capacitors (if paper),
and checking the tubes and resistor values, should be all that is needed.
Clean the level and balance controls.
Free download heathkit a 7d schematic
Due to age, replacing the electrolytic capacitors and coupling capacitors (if paper),
and checking the tubes and resistor values, should be all that is needed.
Clean the level and balance controls.
Free download heathkit a 7d schematic
Last edited:
I have a Heathkit A-7D Audio Amp I just purchased and I understand that there are some modifications that have been made to it over the years. Would anyone in the forum have any knowledge as to where I can find those mod's. Thank you, I would appreciate it.
Here's a tiny snip-it of info: http://www.kta-hifi.net/projects/amp_page/a7amp/a7.htm
jeff
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