The amplifier switches into the protection mode after a random time and comes back again. Sometimes the display shows the error message DC OFFSET error. After measuring the DC-OFFSET, both amplifiers (Left and Right) go through the same DC OFFSET variation. Because both DC OFFSET (Left and Right) show the same wrong behavior, it has to be a powersupply problem.
The -15V supply was not stabel. I changed the regulator REG202 and cap C218 but the problem was not solved. After mesuring I found out that ADJ pin of REG202 was floating. An inspection of soldering pointed out that R214 was soldered at one site. So I resolder the end of the resistor and it's fixed.
The -15V supply was not stabel. I changed the regulator REG202 and cap C218 but the problem was not solved. After mesuring I found out that ADJ pin of REG202 was floating. An inspection of soldering pointed out that R214 was soldered at one site. So I resolder the end of the resistor and it's fixed.
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Arcam is not badly designed junk at all
Looks like one that got through the soak test... leadfree rubbish doesnt help
Looks like one that got through the soak test... leadfree rubbish doesnt help
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