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Old 14th June 2014, 06:20 PM   #1
leosep is offline leosep  ominican Republic
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Default how to test HCF4052BE

Hi,

Do you know how to to test the HCF4052BE ic? My amp isnt working any more.
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Old 16th June 2014, 04:20 AM   #2
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Location: Dona paula, Goa
Your country name... is it correct.

If it is available locally, easiest will be to replace it. It is very cheap.

Why do you suspect this IC. It is mostly used as a signal selector(it works like a switch) in the circuit.

What is the name and model of the amp?
Do you have a DMM?


Gajanan Phadte
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Old 16th June 2014, 05:47 AM   #3
leosep is offline leosep  ominican Republic
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Hi, yes im from Dominican Republic.

The amplifier is an old 'pro master usa' with no model name, looks like a home teather receiver.
I think is the IC because i dont see blown caps or condensers, im not sure, im not a professional. The amp turns on and everything, but no sound, no hiss, or hum. The eq screen where you see the bars up and down when playing, is not flat, the bars are up each one with different heights static, but there is no sound coming out of the speakers.

Last edited by leosep; 16th June 2014 at 05:52 AM.
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Old 16th June 2014, 06:26 AM   #4
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Has the IC got Vcc ?
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Old 16th June 2014, 07:29 AM   #5
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Default Check across pins 8-16

Put a meter across 8 and 16, you should see a DC voltage between 5V and 15V.
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