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Old 27th April 2011, 07:59 PM   #51
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Thanks very much - just rebuilt an old Fender Vibro-Champ, now time to get my hands dirty modifying a transistor amp... oddly enough, the first target is to REDUCE the gain in OD mode to get rid of some of the white noise...
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Old 8th December 2011, 03:43 PM   #52
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Default schema marshall avt20x

Ciao sono Mimmo sono un nuovo iscritto al forum come potete capire sono italiano cercavo lo schema dell' amplificatore per chitarra marshall avt20x se potete aiutarmi ve ne sono grato
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Old 8th December 2011, 03:48 PM   #53
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Ciao a tutti sono un nuovo del forum chiedevo se potevate inviarmi lo schema del marshall avt20x grazie
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Old 8th December 2011, 04:08 PM   #54
kevinkr is offline kevinkr  United States
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Quote:
Originally Posted by videomaker View Post
Ciao sono Mimmo sono un nuovo iscritto al forum come potete capire sono italiano cercavo lo schema dell' amplificatore per chitarra marshall avt20x se potete aiutarmi ve ne sono grato
English is the official language of the forum, and at minimum all non-English language posts MUST include an English translation. I will translate this and the next post. Next time please post in English.

Translation: "Hello, I'm Mimmo, a new member of the forum to learn/understand. I'm Italian looking for the schematic for Marshall ACT20X. If you can help me I will appreciate it."
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Old 8th December 2011, 04:10 PM   #55
kevinkr is offline kevinkr  United States
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Originally Posted by videomaker View Post
Ciao a tutti sono un nuovo del forum chiedevo se potevate inviarmi lo schema del marshall avt20x grazie
Hi Everyone, I'm new to the new to the forum hoping someone can send me a schematic for the Marshll AVT20X. Thanks.
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Old 8th December 2011, 04:14 PM   #56
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ok I don't speak english
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Old 8th December 2011, 04:54 PM   #57
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avt20x my amp no sound I changed the tda 2050 and the valve EE83 unsuccessful you could give me advice on what might be why 'and' dumb it seems that not amplify with
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Old 10th May 2012, 12:56 PM   #58
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I need a schematic of MARSHALL AVT20. Can anyone help me?
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Old 18th June 2012, 03:54 PM   #59
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alot of people are having a problem with avt20's
with r53 burning out and excess noise, and this is not the only forum

audio-talk :: View topic - Flamin' Marshall AVT 20!

has other information on this problem that may be usefull,
or if any one can help me on this

i replaced:
the ic chip - lm1875t
c71 - .22uF 63 volt cap
R53 - 10R (1/2 watt) resistor
and fixed all dry solder

the problems i still have are:

R53 just burn's out when turned on, however it doesn't burn out when the amp is running an external speaker cab?
and there is high frequency whistling and noise whether the amp is running its own speaker or a cab..... also there is excess noise but not the same whistling when the amp is amplifying the c.d. input.
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Old 15th August 2014, 12:28 AM   #60
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Default Help,I need AVT20 schematic.From JAPAN

Hi friend, please help me. I need the Marshall AVT20 schematic to fix my amplifier. Thank you all
Best Regards
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