Help with rockford 851s

[stoke]

first i was looking for some distortion on the left channel and by mistake i change a lil bit the position of rv405 and some power supply transistor get burn, now i changed those transistor and need to put rv405 and rv404 in the default position.. need to know how

[Perry Babin]

I don't have any information on this amp but I assume that these are the bias potentiometers. Start with them in the fully counter-clockwise position. All of the transistors must be tightly clamped to the heatsink before you make any adjustments. The power line should have either a current limiter or a 10 amp fuse.

Does your 12v power supply have an amp meter.

[stoke]

i have the bais pot on the counter-clockwise top position. now both channel work but the sound is not god quality .. what i can do

[Perry Babin]

Are both channels distorted?

[stoke]

Yes

[Perry Babin]

Do you have both positive and negative 15v on the power supply pins of all op-amps?

Do you have both positive and negative rail voltage on the outputs of both channels?

[stoke]

yes i have 15v on the power supply pins of all op-amps. and it dosent get loud with volume and gain on top. when i touch the back of the rca i dosent produce any sound but i can just hear the music very low and distorted

[Perry Babin]

Do you have both positive and negative 15v on the power supply pins of all op-amps?

Do you have both positive and negative rail voltage on the outputs of both channels?

[stoke]

im using 800a2 schematic and they look to be the same board of 851s, i got the 17v from pin 8 and 4 together of all op amps

[stoke]

i replace u100 and u103 and the problem is still present