Question about Sony Televison & Video
about 10 minutes changes color and gets funny horizontal lines and then
everything shuts off and I get a 9 blink error code."
That is overheating!
9 blinks is returned either when there is no return (open), either from IC6402, or from one of the thermistors. THe picture doing funny things shortly before shutting down is clear symptom of overheating problem. If problem was the IC (located in G board), or on of the two thermostat cutting too early, you would get picture going out straight away, without the lines.
The fans can be replaced, but the overheating problem can also be caused by a defective component.
A test can be done running TV with rear panel open and a big fan pointing at the back of TV. This test raises a lot of safety concerns and must be done by a technician.
About schematics, I am uploading the service manual for this chassis. It will be ready in about one hour.
Posted on Oct 22, 2010
Has the Power Supply Block been replaced? PN#1-474-010-11
You can go to Encompass Parts Distribution website they list this Model and Parts ,they also have Free Service Manual that you can Print out online.
Ballast board is what Powers Lamp on .If any of the Fans stop running while set is playing then set will shut down,meaning defective Fan.
I worked on a DLP that had a defective Lamp Fan sometimes it would play 10mins and then play all day before shuting down,it wasnt untill I replaced Lamp ,I noticed Lamp Fan would stop and set would then shut down,So it ended up set had Bad Lamp and Lamp Fan.
Posted on Oct 13, 2010
Red LED Flashing nine(9) times
o C to DSU harness not connected or seated
o S1 board not connected or seated
o S2 board not connected or seated
I recommend you check over everything to make sure everything's firmly connected. Reseat connectors if at all possible.
The S1 and S2 board are little floater boards connected to the ASU/DSU.
The C board is part of the optical block.
The G board is the big power supply board on the right.
Let me know,once done.
Hope i helped you.
Thanks for using ' Fixya ' and have a nice day!!
Posted on Oct 03, 2010
I am so sorry that your repair work has cost you to go a long way in finding the fault in the set. I do not think this is the best way to go about and I sincerely think that your replacement without a proper test of the concerned board without a likely chance of the suspected component being confirmed must be avoided.
To start with you must have good knowledge to check at least the power supply voltages before and after the occurrence of the fault.
As mentioned the set seems to run away on heat or current flow. hence we can try to simulate the heat condition concentrating on each sections of the TV starting from the power section, then the outputs and the processor. You must be able to use a hair dryer to simulate the heat on the suspected component that you would find heating up while the set goes into this funny mode.
Now cools off set using a freeze it spray , switch on heat the suspected component, switch on to see if the fault comes on straight, if not try the next section. Alternatively the cooling can be done to confirm if the set functions for more time. Make sure all connectors are tight, solder all joints well, suspected dry points on power boards must be re soldered.Unless you have access to replacement boards do not buy them as it might end up with a larger bill than to send the set to the service centre,.
I have given you some tips to work on as the said fault can be be a reason in many of these circuits, can be tricky , can be a very easy solution... a possible loose joint. So look carefully with a good light and a magnifying glass to confirm.
Please take all precaution when working with power circuits.
Posted on Oct 18, 2010
Can you tell me which LED is blinking 9 times? The lamp/power? It sounds like the lamp is not properly seated in its slot. Please provide the requested info so that we can continue troubleshooting.
Posted on Oct 13, 2010
As you mentioned
"the unit shuts itself off, the lamp cooling fan also shuts off at the same time"
This shows Power Supply (G) board problem that shuts off for some reason otherwise lamp fan must keep running to cool off lamp.
Power supply board consist of two sections, standby power supply and main power supply sections. Main power supply suddenly turn Off and tv start blinking 9 times because standby power supply is still working and system control chip is alive to diagnose the failure.
Following parts that can be defective in 9 times blinking error code that are mentioned in service manual:
Bus decoder ICs (IC1700, 1800, 1900, 5066, 2305)
Let me know your findings to help you more.
Posted on Oct 04, 2010
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Posted on Jan 02, 2017
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