Durabrand HT-3915 System • Uploaded on Nov 14, 2016
It is not so easy to probe into to find a protection fault condition. The fault can be your output drivers- the MOSFETS/IC's fitted for both the channels, Use a meter after disconnecting to check for short in the drivers. Disconnect the positive and negative voltages to the output and see if the protect changes. Even a fault in the preamp stages that drives in high current into the output can shut the Amplifier. Sometimes this can be a noise like a HUM or HISS before the protect works. Faulty capacitors in these circuits also can cause similar issues and needs close observation.
You need to confirm and replace the specific stages or outputs. If not there can be issues in the mother board, maybe the protect circuit by itself is shutting off due to a faulty bias , maybe a leak in any voltage/current sensing circuit. Also disconnect the speakers and test, if the protect is off then check for short on the speakers.
.......... 0520 0115 0317
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Direct Code Entry
1. Press and hold the CODE SEARCH
button until the red indicator stays
on, then release the CODE SEARCH
button.
2. Press and release the desired Mode
button (TV, VCR, etc.). The red
indicator blinks, then stays lit.
3. Enter the 4 digit code from the code
tables. Note: after a valid code entry,
the red indicator turns off. For an
invalid code, the red indicator
flashes.
4. With your device on, press
CHANNEL UP. If the device
responds, no further programming is
required. Note: If some buttons do
not operate your device, try one of
the other codes for your brand.
OK
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