|
|
|
#1
05-30-2009, 12:43 PM
|
|||
|
|||
|
Sony KV-34HS510 won't power up. Shows 6 or 7 blinks
A friend of mine has a Sony Sony KV-34HS510 HDTV that's not wanting to power up anymore. Sometimes it will, then apparently it will not turn off.
He did a little googling on his own and came across two IC's labeled MCZ3001 which apparently need to be changed. Can anyone provide me with some more info on this issue? 
|
|
#2
05-31-2009, 10:32 AM
|
||||
|
||||
|
I'm not familiar with that set, but you should be able to find the answer to the blink code, and troubleshoot from there. I don't like it when a site tells of a particular part being bad, based on a blinked code. I guess if those chips are inexpensive and an experienced source says they're often the cause, it's worth a try (as long as they aren't miserable-to-change surface mount, or 2-sided foil ones). Most often in Sony XBR sets from the early 2000s when there was a "sometimes will start" problem, it was cold solder joints. Just my 2 cents worth...
Charles
__________________
Collecting & restoring TVs in Los Angeles since age 10
|
|
#3
06-02-2009, 10:26 PM
|
|||
|
|||
|
6 blinks is low B+ or over current protect. Sony manual suggests looking for loads on the +5 line.
7 blinks is loss of horizontal sweep. I hate the blink codes, because half the time the steer me 180 degrees from where the trouble is. I keep a couple of those MCZ3001 chips around at all times. IIRC, in this set, one is used to make the B+ supplies, and the other is the HV drive. Not like real TVs where the HV and horizontal sweep are the same circuit. Those chips seem to go intermittent a lot. My first time troubleshooting a set with them I just about went nuts.
|
|
#4
06-03-2009, 11:10 AM
|
||||
|
||||
|
Quote:
 Charles
__________________
Collecting & restoring TVs in Los Angeles since age 10
|
 |
|
|
Linear Mode
