Jeff, do the markings on the old diode read the same as the new diode? Could be they miss marked the part bag, has happened several times before. Try subbing in a diode like AU02 (nte552) or MUR460, 243636, nte506 Robert tvservice@xxxxxxxxxxxxx H & H Electronics Inc ----- Original Message ----- From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx> To: "Techassist" <techassist@xxxxxxxxxxxxx> Sent: Wednesday, June 23, 2004 6:17 PM Subject: [TechAssist] TA RCA D52W20/ATC221/starts 3x's after replacing CRT > > I hope someone has seen this before..Between the multiple problems and waiting for parts, I've had this > set for a few weeks. > Original problem was burnt green CRT..replaced. > Then set would come on, green got real bright and shut down. Replaced driver IC IB01. > Then set would come on and stay on, but the horizontal was too wide, wouldn't adjust and pincushion and > convergence was way off. > I later found DL032 with about 70 ohms across this diode. Replaced. > Now, set will try to start three times and shut down. Just for curiosity, I put the bad diode back in and > set would fire up..with the last problem. > I replaced the DL032 with another new RCA part and is shutting down. > I put the old part back in, went into service menu to check the error codes. > I got 33(1):safety circuit is active; 56(2) Flash info of the HOP occurred; 81(1) Convergence IC does not > answer. I reset the codes, set geometry and convergence to factory default, unplugged, restarted set and > no error codes with the old part. > I placed the new RCA diode in and back to trying to start. > I checked the circuit of DL032..not much on the anode, to ground, but they checked OK and can find no bad > parts on the cathode. > Scoping the HOT, waveform is at about 2-3µs..and gets wider as the HV builds, s/b 12.5. Checking the box > caps, they check OK.. > With the old diode in, I have the same wave form, only steady and the set runs. > Can anyone offer any suggestions? TCE tech line was too busy and disconnected me. > Thank you... > Jeff > -- > Intrepid Video TV/VCR Repair > 263 S Front St, Steelton PA 17113 > 717-939-7708; (F) 717-564-4952 > www.intrepid-video.com www.tech-repair.net > > > -------------------------------------------------------------------------- --- > 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/