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Replace transformador toroidal ampli A70 hartke

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Posted on Jan 02, 2017

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SOURCE: where can i find a hartke a70 schematic?

The schematic is here. http://music-electronics-forum.com/attachments/6771d1256866984-a70_sch.pdf

Posted on Jan 11, 2015

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I need a schematic diagram with values of components for a hartke gt100 amp


Request the schematic diagram directly from Hartke.

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If you've tried different heads with the same result, the most likely problem is a blown speaker. Check it with an ohm meter, and if it's blown, you can either replace it or get it re-coned.

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Where can i find a hartke a70 schematic?


The schematic is here. http://music-electronics-forum.com/attachments/6771d1256866984-a70_sch.pdf

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Perhaps it contains a fuse wich has been blown...or the transformer wich powers the speaker-cabinet

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All three of my tone knobs are snapped off at the pots on my Hartke GT100 head. I wanted to know how I could find the right replacement pots, and how to install them myself.


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HI just got a A70 . I love the amp, except when I hit certain low notes I get a crackle just before the note rings out. Tried 3 new cables same thing , cleaned guitar jack and checked out connections...


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My Hartke A100 has a problem, no power, the problem is transformer. what is the exact volt of transformer A100 hartke? than you


Transformers don't often fail. I have heard that some of these have a thermal fuse in them and they sometimes open. If you can get to the fuse in the windings, you can replace it and save the transformer. The fuses look like a silver tube about 5/8 inch long and 3/16 inch diameter with a lead out each end, They are marked with the temp they open and are a one-shot thing that have to be replaced.

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Looking to buy used bass 3500 hartke,the guy said he hooked up a cd player to it now it doesnt turn on???possibly a power transformer he said??any ideas??thank you


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Amps in a seires


I'm not sure what this will do, but electrically you can hook these up. Using the line output from the swx, connect it to the line level input. I think that that would be the active input. When you connect a guitar(without a battery powered pickup) to the hartke, it goes to the passive input right? If so, then connect the line out of the swx to the active input. Reverse if the behavior is opposite of what I described.

Realise that with these two connected to each other, you will be using both pre-amp sections and the amp section of the hartke.

Dan

Mar 01, 2010 | Music

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