Home |
Search |
Today's Posts |
|
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. |
|
LinkBack | Thread Tools | Display Modes |
#1
|
|||
|
|||
Sony kv20v80 PS Problem?
Hi all, I have a 1998 Sony kv20v80 in shutdown with 2 blinks on the
standby led. I think that means the PS section area. I am working off of a Sam's #4134 schematic. Measured the 115v, 12v, and standby 5v sources and these are ok. The 9v source off of Q605 9v reg goes to 4v before shutdown. As is the 5v source off of Q650 reg, fed from the 9v source. Measured the resistance at the 9v TP to ground and it read 3.5 ohms. Don't know if that's normal or not. Q502 HOT is a 2sc5426 with internal damper. Seems to check out ok except I do get a reading of 43 in ohms function B to E and 4.3 in diode check function. Reversing the leads gives the same #s. Not sure if the Hot has an internal resistor. Anyone with pointers on what I should be looking at next or have fixes on similar models. Thanks , Al |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Sony hmd-a400 hv problem | Electronics Repair | |||
Problem with Sony KV-32FS12 TV | Electronics Repair | |||
Sony TV Problem | Electronics Repair | |||
Sony 17" monitor: problem with signal cable replacement | Electronics Repair | |||
Sony TV vertical interlace problem... | Electronics Repair |