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ZECK CA1600 amplifier - need help to repair the am

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Category: General
Forum Name: Amp Forum
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URL: https://forum.speakerplans.com/forum_posts.asp?TID=95521
Printed Date: 27 March 2026 at 7:52am
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Topic: ZECK CA1600 amplifier - need help to repair the am
Posted By: shehantha
Subject: ZECK CA1600 amplifier - need help to repair the am
Date Posted: 17 April 2016 at 7:41am
Dear Sir,

I am in Sri Lanka. My name is Rohan. Recently I receive Zeck CA1600 amplifier from one of my customer for repair purpose. He has given it to some other repair shop and they were unable to repair the amp. after that the owner brought the amp to me.

When I open the amp and observed, both  http://en.audiofanzine.com/full-range-pa-speaker-cabinet/celestion/cr-153/?utm_medium=&utm_source=audiofanzine&utm_campaign=netting&utm_=product&utm_term=cr153 - CR153 diodes are missing from the both sides. I down loaded the CA1600 schematic but it has only written  http://en.audiofanzine.com/full-range-pa-speaker-cabinet/celestion/cr-153/?utm_medium=&utm_source=audiofanzine&utm_campaign=netting&utm_=product&utm_term=cr153 - CR153 . theres no zener value.

could you please tell me whether I have to put 18V zenner or 4.3 Zenner. Or what is the correct zenner voltage . I downloaded Zeck A1205 schematic also. it mention 18v zenner. but on some other models of schematic mention 4.3v zenner .

so for CA1600 what is the correct zenner voltage?

Dear Sir, your valuable advice will be highly appreciated from our end.

please reply to shehanthapere@gmail.com in ENGLISH

Thanks
Rohan - from sri Lanka




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