supereagle
Active Member
Ok unit started a low hum sx-1980,rebuilt power supply completely also used echowars mods and moved heat causing trans to giant heatsinks .Rebuilt gwh-109 and gwh-110 ,gwh-109 has the strange black and yellow small round thermisters .Hooked to dbt went dim set gwh-110 ,gwh-109 left channel 3.5v dc offset idle current is 1.0mv ,cannot adjust dc offset below 3.4v .Any ideas where to start or where to check? Checked pins on power supply all normal .
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