7 posts
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Post by blackhawk on Sept 5, 2017 14:05:08 GMT
I have a Harley Benton amp model HB-10G and I’d like to remove the Energy Saver.
This amp needs to be activated by a signal coming from the guitar into the guitar input in order to work. If not activated by the guitar, the amp stays on standby mode.
On the other hand, if you activate the amp through the guitar input and then you only use the aux-in input, the amp will enter in standby mode after some minutes if it not receives any new signal from the guitar.
That’s irritating if you use the amp as a PA speaker like in my case. I connect my Zoom G3X directly to the aux-in input because I like to use the amazing amp simulators of the Zoom G3X, without using any amp colored sound of the HB-10G amp. But the problem is that the amp will enter in standby mode automatically passed some minutes.
Is there any way to remove the Energy Saver making some modification to the electronic circuit? Thanks for any help!
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7 posts
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Post by blackhawk on Sept 5, 2017 16:31:56 GMT
A dummy Jack into the guitar input will no activate the amp because you need to pick a string of the guitar to actívate it. I suppose that the amp needs to receive a signal through the guitar input to be activated. So the solution should be to modify the circuit, bypassing the energy saber device inside the amp.
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7 posts
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Post by blackhawk on Sept 6, 2017 15:03:17 GMT
Thanks for your help. I think that the only solution is to open the amp box and have a look to the circuit. I will open it and try to find if there is any audio signal controlled switch connected to the input Jack. If I find the solution I will let you know through this forum.
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3,968 posts
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Post by salteedog on Sept 7, 2017 10:06:09 GMT
Interesting. If you plug a guitar in but don't play it does it work? (as in does it switch off the energy saver?). If so then you might be able to bypass it with a dummy jack that is shorted - or, to play it safe, with a resistor across it?
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Post by samw on Apr 6, 2018 12:59:19 GMT
Hey folks, I saved a HB10-G from the scrap bin and repaired it. A trace of the TDA2030 feedback was broken, so the amp was buzzing very loud. There is a very simple way to remove the annoying energy saver feature: Just open the amp and place a little jumper on the energy saver PCB. You can buy these jumpers or salvage them from old computer waste etc. I removed the "sense" cable from the input to avoid unnecessary interference. Here is a picture for better understanding
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Post by gigikent on Dec 22, 2021 23:35:19 GMT
hi, my problem is that it takes about 30 mins to start "sensing" the signal from the guitar. I see on the energy saver PCB 2 pair of pins hd7 off and hd6 on, I attach a picture too.
Does anybody know which is the pin set I have to put the jumper to?
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Post by gigikent on Dec 23, 2021 8:02:24 GMT
it was the hd6on, now it passes the standby part with the green led.
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Post by zorro on Feb 10, 2022 19:54:32 GMT
it was the hd6on, now it passes the standby part with the green led. Hi, I think I have a similar problem with my HB 300B. It will randomly turn itself off with a small 'pop / click' sound. It seems to be a protection breaker or the energy saver kicking in in error. About 30 minutes later the amp comes back to life and then lasts for another 10 minutes before shutting down. Some things to note - problem diaganostic: Occurs at low and high volumes, no heat present on components. Fan is working as intended and not covered. Occurs on both channels. Happens at home and at venues. Power cables are power sockets are all ok. Would you have any photos of the work you did to deactivate the energy saver? I'm thinking it may be fauty. Thanks, El Zorro
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