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Author Topic: TDA2050 power amp problems  (Read 4184 times)

exztinct01

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Re: TDA2050 power amp problems
« Reply #15 on: May 17, 2016, 08:15:28 AM »
Yes, those chipamps do run very hot and needs heatsink even without load.  :)
Or you'll fry it in seconds
~ Stephen

Enzo

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Re: TDA2050 power amp problems
« Reply #16 on: May 17, 2016, 01:25:18 PM »
Would you ever run a car engine - just for a second to see if it works - with no coolant in it?  Or no oil?  Like he just said, it can overheat in seconds.

What do you mean by "shorts out" the IC?

Fossilshark

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Re: TDA2050 power amp problems
« Reply #17 on: May 17, 2016, 02:28:47 PM »
Im assuming thats whats happening because im getting no sound and really rapid heat build up

Loudthud

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Re: TDA2050 power amp problems
« Reply #18 on: May 17, 2016, 07:55:37 PM »
When the chips go bad, you can usually find an internal short by Ohming between the V+ or V- pins to the output pin. Measure an unused chip to establish what a normal reading is. On a good chip the reading may change if you reverse the red and black meter leads.

Fossilshark

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Re: TDA2050 power amp problems
« Reply #19 on: May 18, 2016, 03:59:49 PM »
Thanks. I checked my chips and i lt appears i havnt blown any (yet) but i am still not sure whats wrong with my circuit. Should i try using a pc power supply that i know is +/- 12v?

Enzo

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Re: TDA2050 power amp problems
« Reply #20 on: May 18, 2016, 09:43:16 PM »
As long as the supplies are connected to ground at one end, and the proper + and - polarities are connected to the circuit, it doesn;t matter what type of power supply you use.  12v is 12v, the transistors don;t know any different.

And get the IC on a heat sink, without that, it will never work.

exztinct01

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Re: TDA2050 power amp problems
« Reply #21 on: May 18, 2016, 10:08:28 PM »
and make sure you made the right connections. I've tried powering up an LM1875 amp before and wondered why it won't work. After just 2 seconds, i turned off the power only to find that I made the wrong connections for my + and -

I was lucky no component was damaged.  ;)
After that, I decided never to work in my electronic projects again when my mind or body is not in good condition. I was sleepy then coz I don't want to leave the project unfinished.  :P
~ Stephen

 

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