UREI 1176 rev F, oscillation problem

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furn1979

Well-known member
Joined
Apr 18, 2010
Messages
64
Hi... I tried reviving this old thread without much success, but for references: http://groupdiy.com/index.php?topic=38897.0

My unit was modified (fixed values for attack and release, off-switch bypassed, pre-accentuation switchable circuit on the input...) but I managed to bring it back to stock.

The only problem that subsists is the unit slips into oscillation (high level, 80khz-ish) when OUTPUT control is set beyond 4-5 o'clock AND METER is set to either +4 or +8. When METER is set to GR or OFF, the oscillation does not occur, even when pushing OUTPUT to the maximum.

Which section is to blame? What could it be?
Thanks!
 

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