I did that and the 'CHK' went away, but I still have the problem with the low vertical. I suspect that I have to get into the factory menu and adjust the vertical for a full screen but I don't really know how to do this on this set and what parameters to adjust, if someone has the procedure on it I would appreciated. Thank you, Mark Electronic Repair Services 48 W. James St. Lancaster, PA 17603 ----- Original Message ----- From: "Jim Myers" <jr.myers@xxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Friday, December 19, 2003 5:07 PM Subject: [TechAssist] Re: PANASONIC TV CT-27SX12F Vertical problem? > The set is in service mode and the way to clear it is by pressing the action > and power buttons on the set, not the remote, and hold till set turns off. > It should then turn back on and be on channel 3 and at a preset volume > level. If that doesn't work you may have a problem on the key scan lines or > on the switches. > ************************************************** > Jim Myers > Since 1972 > Telrad Electronic Services Co. > Fort Wayne, IN 46815 > ************************************************* > ----- Original Message ----- > From: "electronicrepair" <electronicrepair@xxxxxxxxxxxx> > To: <techassist@xxxxxxxxxxxxx> > Sent: Friday, December 19, 2003 4:41 PM > Subject: [TechAssist] Re: PANASONIC TV CT-27SX12F Vertical problem? > > > Tried it, did not work.. > But now when I push the power button on the remote a blue window > opens up on trhe bottom right corner which displays 18 B 00, push again you > get 115 C 00, and so on. > Thank you, Mark > Electronic Repair Services > 48 W. James St. > Lancaster, PA 17603 > ----- Original Message ----- > From: "Larry E." <videotech@xxxxxxxxxxxx> > To: <techassist@xxxxxxxxxxxxx> > Sent: Friday, December 19, 2003 4:21 PM > Subject: [TechAssist] Re: PANASONIC TV CT-27SX12F Vertical problem? > > > > Mark, I had a similiar problem on a Panasonic projection set, mine had > > vertical shrink, a > > yellow CHK, and it would intermittently channel up one channel when > > turned on, fix was > > to re-set the eprom, on the remote push action & power keys at the same > > time, hold them > > down until the set shuts off, hope this is the fix for yours, Larry E > > Larry Eastman > > American TV & Electronics > > Crystal River, Fl. 34428 > > > > electronicrepair wrote: > > > > >This TV came in with the vertical shrunk top and bottom to about 6" pix. > > >Also on the screen, on the top left it displays CHK in red and some > numbers > > >next to that.. > > >I assume this is in some sort of factory menu. This set came from another > > >shop because they > > >didn't have a clue what was happening, which now it makes two of us. > > >I checked the caps on the vertical section they all seem OK. > > >One time that I turned on the whole picture came on, but it was very > jittery > > >and after about 5 minutes > > >it turned off and the only way to turn it back on was to unplug the set > and > > >plug it back in then turn it on. > > >Can someone shed some light on this dilemma, I would appreciate it very > > >much. > > >Thank you, Mark > > >Electronic Repair Services > > >48 W. James St. > > >Lancaster, PA 17603 > > > > > > >*************************************************************************** > ** > > >Lost Password: > > >http://www.tech-assist.org and select "Login Problems?". > > >Email Archives: > > >//www.freelists.org/archives/techassist/ > > > > > > > > > > > > > > > > **************************************************************************** > * > > Lost Password: > > http://www.tech-assist.org and select "Login Problems?". > > Email Archives: > > //www.freelists.org/archives/techassist/ > > > > **************************************************************************** > * > Lost Password: > http://www.tech-assist.org and select "Login Problems?". > Email Archives: > //www.freelists.org/archives/techassist/ > > **************************************************************************** * > Lost Password: > http://www.tech-assist.org and select "Login Problems?". > Email Archives: > //www.freelists.org/archives/techassist/ > ***************************************************************************** Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/