I have a sony trinitron kv-27hs420 and when i try to turn it on the standby light flashes 7 times tho sometimes it will come on but rarely, i have been told i can fix this this by replacing 2 chips on the board, however the tv is old and the entire board is cheaper and easier then buying/installing the chips, can i just replace whole board? and which board is it
For more details, just type in the site name "Electro-help" to
your search engines' search box [not in the address bar of your browser],
and click search. It is an electronic
equipments service help site. All
details you want are there. Note
the position of hyphen in between words in site name, when you type it
in. The site will appear as it
is in web; subtitled as Service help to electronic home entertainment
equipments. Pull up older posts.
You can get all details. You can locate it
either at the bottom part of first search page, or at the top of second page.
Detailed descriptions are there to help you.
Sometimes, clicking on advertisements by the side and
bottom of each post might help you to get details about the availability of
spare parts; price etc:-
SOURCE: Sony FD Trinitron Wega
The power supply board is failing. There are twi integrated circuits in the horizontal drive circuitry that have to be replaced. The original integrated circuits are the same type and you will see written on each..."MCZ3001D" and need to be replaced with Sony # 670581001 or the "D" board with those parts on it needs to be replaced. The cost of the entire board is high-about $375.
SOURCE: RE: Flashing "Standby" light
Go here http://www.avsforum.com/avs-vb/showthread.php?t=928945&page=4
for my post #108 for a step-by-step solution with pictures. $21.83 is all it cost me. I fixed my own TV as many others on that forum have. Feel free to contact me at [email protected] if you run into difficulties.
-Dave
SOURCE: Sony WEGA Fails to Turn On Stand-by Timer Flashes 7 Times
Follow the instructions from the image provide and see if that works, if it does not work; you have a hardware failure in your TV. The hardware failure could be the HOT or flyback transformer.
Let me know if you need further assistance.
SOURCE: Sony Vega Service Codes
KV-32HS510 and KV-27HS420, seven times blink error code shows problem in Horizontal deflection circuit.
There are many possibilities like dry solder joints, weak capacitors, Horizontal transistor short or flyback transformer fried etc.
If you have little experience of TV repair and good solder skills and have necessary tools to test / check defective parts, then you can make it. you also need to have related service manual to see board location, schematics and part numbers.
SOURCE: Sony TV Model KV-HS510
Hold setup button on remote while pushing the ON/OFF button on the TV at the same time. It worked for me. Here's the website I got this from: http://www.kb.sony.com/selfservice/microsites/search.do?cmd=displayKC&docType=kc&externalId=http--esupportsonycom-perl-tutorial-displaypltutid297templateid1regionid1KSMFlag7370&sliceId=&docTypeID=DT_TUTORIALS_1_1&dialogID=53101564&stateId=0%200%2053105132
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