Question about Directed 1100d Car Audio Amplifier

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1100d going in and out of protection mode

Every half second from red to green. I found that 2 speakes were reversed. Im thinking a diod or the outputs may be blowed. How much might I be in for on the repairs. 4 15 dual 4oms speakes ran at 1 oms is what it was pushing.

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  • 16 Answers

Maybe your speaker wires(pos and neg) are touching somewhere? for a 4 set of duals..your looking at 150 tops?

Posted on Jul 03, 2009

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1 Answer

Reverse polarity hook up blew fuse link. Where can i get the correct fuse link to solder into the stanley inverter pc809 800watt?


Hmmmmm, well that`s unfortunate , i can tell you that most electronic devices that connect to low voltage DC supply's are protected bye a protection diode and the fuse link you think it might be is a circuit trace internal.
an 800 watt innverter draws about 80 to 100 amp to produce the 800 watt output and you must have 2 40 amp fuses or 3 30 amp fuses customer replaceable, if you did not damage the components in your device all you kneed to do is to repair the circuit trace and replace the reverse polarity protection diode to restore normal operation

there are no fuse links internal to inverter power supply's

best regards Falco

Oct 27, 2013 | Electronics - Others

2 Answers

MY KICKER ZX 750.1channel amp "FLIP FLOPS" from protected mode(red light) to normal (green light) every 2 seconds.


Are you getting any sound output at all from amplifier?
Is there a popping or banging coming from speaker?
It could possibly be a faulty output mosfet that is ocillating cause DC to leak onto the speaker output causing it to flip into protect.
please advise
thanks,ben

Sep 27, 2010 | Kicker (ZX750.1) Car Audio Amplifier

1 Answer

My 1500d directed blow fuses as soon as you turn it on the red protection light keep flickering same as the green


It is for sure that you have a short in the amplifier and so will need to open the set to identify before the power is switched on. So first of all use a good multimeter to check for short in the output drivers. Disconnect the power line to the drivers and see if the set triggers on. If not trace it to the circuit near the power supply which makes the fuse blow. It can be easily found out by checking for the short or the voltage drop when powered. I hope you could try. Good day

Aug 11, 2010 | Directed 1100d Car Audio Amplifier

1 Answer

After turning ON the power/standby switch, the unit(receiver) display comes ON (green light) then after approx.4-5 seconds the display goes OFF and the unit defaults back to the standby mode (red light). I...


Is the red light flashing at first?
The unit may be going into protect mode. Lets hope it has done the job and the receiver has protected itself from failure.
Protect mode can result from speaker wires touching each other or the Amps2_bing.gif metal case. Check that first.
It can also be caused by unstable ohm loads if too many speakers2_bing.gif are connected to any of the outputs especially zone 2.
If you can remove all speaker wires and turn the unit back on. If it stays on, turn the volume down on the main zone and zone 2 if connected. Then reconnect speaker wires.

Nov 16, 2009 | Denon AVR-485 Receiver

2 Answers

Tv won't turn on


yes but you have to open the tv

Mar 01, 2009 | Loewe Aconda ACO9303 30" TV

1 Answer

Turns off after 4 secs or so....From Green to Red,


probably one of the surround channels is blown, thats why it goes into protection, meassure output transistors with a ohm/diode meter if thers no shortcut in the base to collector
pauliesbouth

Aug 25, 2008 | Denon AVR-1905 Receiver

1 Answer

Coustic 601se power on but bad sound


This is generally caused when there are blown output transistors but that generally causes the fuse to blow or causes the amp to go into protect mode.

If you connect a 15 amp fuse in series with the main power wire and it blows when remote voltage is applied, the amp is drawing excessive current. The problem could be either in the power supply or audio circuits.

Do NOT apply power without having the transistors clamped TIGHTLY to the heatsink. They can fail in seconds when there is a problem. The heatsink helps protect them.

The following page may be helpful when troubleshooting.

Amplifier Repair Primer

Let me know if you have any other questions.

Aug 23, 2008 | Coustic Car Audio 601SE Car Audio...

1 Answer

Philips 50P8341 green light


I believe its the vertical output IC. Diodes would tend to blow fuses . I would replace the vertical output and see if that takes care of the problem.

Aug 20, 2008 | Philips 50P8341 50" Rear Projection...

1 Answer

Climbing DC offset then protection mode


Hi there

Firstly, check for conductive hold down glue about the output stages. This can cause the problem you have. Or there may be a failing component somewhere in the output stage of that channel. Check for leaky transistors,diodes an capacitors. You will need to remove semiconductors to check for leakage, If you dont have alot of experience faultfinding amplifier power stages, I suggest you take it to a NAD authorised service center.

regards
Graeme

Mar 27, 2008 | NAD C370 2-Channel Amplifier

3 Answers

Huge static busts


Hi,

Most if not all CB radios have a reverse protection diode soldered immediately right after the power connector. Its purpose is to provide a practical short if the wires are connected wrongly to a power source. This would cause the fuse to blow. The diode normally goes bad after a reversed polarity connection and therefore would need to be replaced. This diode is not in series with the B+ line but connected parallel to the power.

In some instances, other components would also fail: Power capacitors, Audio IC, TX finals and/or the switching/regulator IC.

Hope that this be of some help/idea. Pls post back how things worked out or should you need additional information.

Good luck and kind regards.

Dec 17, 2007 | Cobra 148 GTL 120-Channels Base CB Radio

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