U2000 Linearity Adjustment

jimk

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I have a U2000 with a small linearity issue. Is there an adjustment for this on the chassis? I've looked all over and couldn't find one.

Also, the chassis looks to have been recently capped. Maybe one was missed?

Thanks for the help.
 
(vertical supply)

Check R302 1.2 Ohm 3 watts
Diode 302
C305 2200 uF @ 35 volts

(IC area)

You can check for +30 volts at pin 2 of the vertical IC TDA1771... 25 volts if the vertical mod was done (which it should be to prevent premature vertical failure). You can also check this at the anode of D603.

Also check D603, C607 and C613

Most likely your vertical IC is the problem though.
 
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