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Troubleshooting: Schematic of an Audio Amplifier

Attached you see a schematic of an audio amplifier. I got it from reverse engineering of the original amplifier PCB.

When I attach the Voltage the fuses get blown.

I found already one mistake:

Base of Q15 is not connected to Base Q16. Instead base Q15 is just connected to collector of Q15.

Base of Q16 is connected like in the picture (R29, R30) but not to Base Q15.

Evner: Elektrisk Ingeniørarbejde, Elektronik, PCB Layout

Se mere: troubleshooting audio amplifier, audio amplifier troubleshooting, pcb schematic amplifier, troubleshooting, see ELECTRICAL, reverse-engineering, reverse engineering, pcb schematic, electrical pcb, reverse schematic pcb, electrical schematic, reverse engineering schematic pcb, electronics reverse engineering, reverse engineering pcb schematic, pcb layout load cell amplifier, amplifier pcb schematic, reverse engineering pcb, reverse pcb schematic, pcb engineering, pcb reverse engineering schematic

Om arbejdsgiveren:
( 11 bedømmelser ) Cologne, Germany

Projekt ID: #4003697

13 freelancere byder i gennemsnit €119 på dette job

MikroStar

hi, i can help.................................................................................................................

€150 EUR in 3 dage
(43 bedømmelser)
6.2
quang102

hello i can do that thanks

€150 EUR in 5 dage
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5.2
MIKY4227

Hi bad conection of q15 and q16 for first test conect base q11 to base q12 amplified is only in B model not A-B model and you test next install two diodes type in4007 and test.( a-b mode) need remplaced c10 =100nf Flere

€100 EUR på 1 dag
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4.9
betaenergy

Dear Sir, We are Reserach and Development company whose working area are : -Digital Motor Control -Analog Design -Electronic Design -Power Electronics -PCB design -Embedded system -Matlab -Simulation of ha Flere

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4.7
pcbdcs

Hello, We can do this.

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3.6
SanducAndrei

Hi, do you need a professional help?

€200 EUR in 5 dage
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3.3
akhachat

Please read the PMB

€45 EUR på 1 dag
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3.0
DamithaKD

Please Read Pm sir :)

€100 EUR in 10 dage
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1.8
faizankhalid

I can help you out...

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0.0
zhuguangxing

I am electronic [login to view URL] check my PMB.

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parmarjp

I can do this for you.

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fezlopez

With over 5 years in PCB and electronic components, finding the source of your issue and defining it is no problem.

€250 EUR in 5 dage
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deckhodor

I've repaired built, reverse engineered a lot of audio amplifiers with transistors in my life.

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Gaber2611

Dear wilson, please see the PM.

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