I have this CTC178 projection which originally some mouses pee'd on the chassis causing it to not start up. After many lengthy repair sessions, I now believe I have it running properly (will post the fixes shortly). I do have a question though. The mouses pee'd around the SMPS area of the board (among other ares) so I had to replace R4912 which is a factory sealed trim pot (warning in service manual to use only the official kit). I just used a trim pot I had and maybe a few related parts (been a long while and I can't remember exactly). The B+ was running at 127V with the pot set at center. The service manual says it is a 135V B+ supply. I have now adjusted the B+ to 135V. Checked the Xray shut-down tests which function OK). Is that good enough or is there another reason why RCA wants us to only use the factory supplied kit? Thanks for any help. -- Gary McCartney McCartney Electronics Guelph Ontario Canada Est. 1984 email: gary (at) number63.ca ----------------------------------------------------------------------------- This Email List is Public. Remove: http://www.tech-assist.org/remove.htm Set Vacation mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/