HI Ron, The schematic says and I quote, "This set employs an Auto Kine Bias circuit. There is no adjustment to be performed." It does have a service menu but that feature is no in it. However to get into it you simultaneously press the front panel menu, volume down, and channel down buttons. It doesn't say how to exit but probably just power off will do it. It only shows six adjustments to be made in the service menu -- Factory mode Environment Brightness Maximum Volume Vertical Sync AC Power Hope this helps some. Dave Routson ----- Original Message ----- From: "Ron Miller" <rlmbkm@xxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Friday, November 30, 2001 10:56 AM Subject: [TechAssist] Zenith C3S chassis SJ2775BG SM question > > Need to adj. gray scale,no pots on crt pcb don't see a AKB ic.Using the code > of holding menu till disappears hitting 9876 then enter did not take me to > service menu.How do I adj. this one? > Ron Miller > D.T.V. Texas > > > ================================= > Help make your TechAssist database better! > Submit your fixes here: http://circuitwork.com/techassist/tip/#tips > ================================= > To UNSUBSCRIBE your email address, click here: > mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe > ================================= Help make your TechAssist database better! Submit your fixes here: http://circuitwork.com/techassist/tip/#tips ================================= To UNSUBSCRIBE your email address, click here: mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe