Question about Lanzar OPTI 50c Car Audio Amplifier

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Lanzar Opti 50C

Ok I have a 50c with major power supply issues. All the ground traces on the circuit board are burned and gone. Has anybody had experience with fixing these amps. I was told by the technician that used to work on these that its a bad power supply. There is alot to the power supply on these boards and have yet to find a burned out component or a burned trace away from the large guage ground wires. Please help. I wopuld like to get this thing going again.

Posted by Andrew Warren on


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You are speaking about Zed audio. This is definitely something you want to save if possible. I would contact lens are direct or find an old school technician such as myself that still works on these things.

Posted on Nov 21, 2014



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When there are burnt traces on board if its only a few you can bypass them with jumpers then all circuitry has to be checked and tested befor you go any further,can go into more detail just drop me a line randall 574-220-0162

Posted on Jan 14, 2008


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No power

There are plenty of places to run the ground wire to the board. The majority of the wide traces are ground traces. This can be repaired but you must know what is and is not a ground trace and how to connect broken traces if necessary. This is serious business when you talk about repairing the voltage input so be sure or get help if you don't know for certain what you are doing.

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the 50 C was used as a cheater amp back in the 90. You will be shocked by what this thing is capable of doing you can run an entire system subs mids and highs off of this 50 C. About 1300 watts

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I have a Lanzar Vibe 235 amp. the green power light is not coming on, but the red "protect" light is. how do i solve this problem??

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    The reason your blowing fuses is the amp needs at the least a 150 amp fuse on the wire that runs to your bat. There are fuse blocks that you can put 4 40amp fuse and theres the high dollor ones that you can put all the way to 200amp. When you trun up your amp its drawing to much current for the little 40 amp fuse that you have and will blow it everytime. I recomend Running a 4 gage wire to bat and ground with same. Get you a 150 or above amp fuse from a car audio shop somewhere. anyway sounds like from what you decribed, theres nothing wrong with your amp just the wires and fuse are not big enouf to handle the current that your amp pulls.

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    sounds like inputs are blown or channell blown!!! are you running high output preamp???
    either way cheap fix,i had to repair a few of the opti inputs last summer for a customer if you need more info drop me a line 574-220-0162 Randall

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