 |
|
| Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
| Reply |
|
|
LinkBack | Thread Tools | Display Modes |
|
#1
Posted to sci.electronics.repair
|
|||
|
|||
RCA PTK169 chassis repair help
I have a CTC169PGA chassis that died suddenly. I replaced the chopper transistor (Q4101) and regulator IC (U4101). When in standby, I am getting 14-15 volts on CR4118 but nothing on CR4116 (B+). Does this mean the supply is working and there is a short on this line (HV splitter maybe or CR4116 bad)? Or could this still be a power supply issue?
Jack |
|
#2
Posted to sci.electronics.repair
|
|||
|
|||
|
RCA PTK169 chassis repair help
Sounds like 4116 is open. The old 243646. I use the same diode for 4118 actually.
That power supply operates in like a "burst" mode when turned off. It will not go into "run" mode without horizontal drive. The rectifiers can check good on an ohmmeter and be bad. |
| Reply |
| Thread Tools | Search this Thread |
| Display Modes | |
|
|
Similar Threads
|
||||
| Thread | Forum | |||
| PTK169 B+ still high | Electronics Repair | |||
| RCA PTK169 part no | Electronics Repair | |||
| PTK169 PGA | Electronics Repair | |||
| welding repair on chassis | Metalworking | |||
| Repair Q on a Sony 27" chassis.. | Electronics Repair | |||
Linear Mode
