BOGNER AMPLIFICATION
4
fuses – back panel
There is a main and a high tension (h.t.) fuse, both are 3AG “slow blow” type. The 120 volt Helios Eclipse
models use a 4A “main”, the 220-240 volt models a 3A main fuse. The “h.t.” fuse is 1A.
It is always good to check fuses with an ohm meter to verify they are blown.
troubleshooting
Make sure your read and understand the safety instructions!! Repairs should only be done by
knowledgeable Technicians!! Always make sure your cables, guitars, effects and extension cabinets are
working and connected correctly. If you think something is wrong with your Amp, play straight into it with
nothing else connected other than a guitar. That way you can make sure it is the amp. If you own a
combo, unplug the internal speaker and connect an external speaker cabinet to make sure it's only the
amp that is faulty. For noise check the appropriate tubes. Micro phonic feedback usually comes from the
preamp tubes but is normal at certain levels of gain. Tubes are delicate and have a limited life span
depending on operating time, temperature and mechanical influences. 99% of all sound and noise
problems come from preamp tube failure. A blown “h.t.” fuse indicates one or more bad power tubes. We let our
amps run for at least two days before we ship them to make sure that the tubes work properly but since
they have a glass housing and delicate little plates inside they can be damaged during shipping. Please
don't feel discouraged. We don't manufacture tubes and can only retest them to make sure they're okay.
There you have it! It's all up to you now, be creative and push your musical imagination…For Questions
check out our website or send an email to info@bogneramplification.com
bogneramplification.com
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