Question about Sony HMD A220 17" CRT Monitor
I have an ongoing problem with this TV set that I can not seem to solve on my own. Initially about a month ago, I turned on the set and after an hour or so it shut down. I unpluged & repluged and it powered back on & stayed on. The next day I turn it on & it shut down. Afterwards, I could hear a faint "ticking" sound. After viewing numerous posts in various TV forums, I ran across a post in this forum by someone named "pasty" who advised the following: "common for the horizontal output to short in these models is a 2sc3892a which shorts because of a 10uf 160V filter capicator on the primary of the H drive transformer deteriorates & distorts the Waveforms causing H out transistor to overheat & short". I also found another solution in another TV forum that advises that a 22uf@50V cap located at C871 on the power supply board is also known to cause problems. I have also found a solution that said to also replace the IC regulator along with the HOT. To summarize, I have replaced the HOT, the IC regulator, and the following electrolytic caps: a 22uf@50V on circuit # C871 on power supply board, and a 10uf@160V on circuit # C416 on the same board where the H.O.T. is located. Now then, after installing the above new parts, the TV powered up with a wonderful clear & crisp picture, but after 15 minutes it shut down. After it shut down there was NO "ticking" sound. I unplugged & replugged & it again powered on but again shut down after 15 minutes. The HOT tests good with my DMM, and I am at wits end trying to figure what is causing the TV to shut down. I am looking for a straight foward solution to help solve my problem. I have limited experience, therfore a step by step solution would be most appreciated!! I thank you.
The cuestion is if every time it shut down you have the hot shorted,or not. have measure the flyback/yoke/Hot working current? it must be under 0.6Amp ,if is greater something is wrong and cause overheating.Normally I touch with my fingers to "measure" the temperature. and what about the Micro?.there´s one pin that control power on/off ,is it good-solid data or is crazy . micro gets hot, have a correct 5Volt on its VDD pin. lot of cuestion that I hope helps you!!!
Posted on Jul 13, 2007
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
May 06, 2017 | Toshiba Televison & Video
May 05, 2010 | Remington R-9190 Electric Shaver
Feb 04, 2010 | Toshiba REGZA 47HL167 TV
Jun 19, 2009 | Toshiba 50HP66 50 in. Plasma Television
Jan 25, 2009 | Toshiba 36A50 36" TV
Nov 12, 2008 | Toshiba 35A44 35" TV
Aug 05, 2008 | Televison & Video
May 24, 2007 | Toshiba 36A40 36" TV
157 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: