Your description of this problem to another poster describes my issue exactly and I described this to the Philips Customer Service support folks even describing what I thought to be a heat problem, they offered no assistance. Questions - 1) is this a fairly easy fix, I have some technical experience with electronics?; 2) do you know where I can get a service manual to help with this fix?; 3) where can I purchase these parts?
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Re: TV loses video and sound
Check the firmware on the set and if is is not BX23U-18.104.22.168_03531 go to www.usasupport.com to down load the currect version. That should fix the problem. If it does not your small signal board need to be replace.
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Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
It sounds like you are talking about "described video". Does your signal come through a set top box before going the TV or is the cable hooked directly with the TV? If going through a set top box first, you need to change the setting in the set top box.
I would first check if there is an available firmware upgrade for your model .Upgrade requires you to download firmware from philips website.Then transfer it to a memory stick .Then use a memory stick reader to plug into tv for firmware upgrade.Other wise the set would probably need repair .Possible a bad SSB board or another issue
I have over 10 years experience in electronic tech support.
know this isn't what you want to hear, but the problem you've described
can't be fixed with troubleshooting. Your TV will have to be repaired.
There is a part that has developed a defect and needs to be replaced.
The TV should have at least a one year warranty from Philips. If you're out of warranty and didn't purchase an extended warranty plan, you'll have to pay for the repair yourself. The cost will likely be in excess of $300 and could exceed $600 depending on the exact cost of the circuit board needed to complete the repair. If you're in warranty, call the number in the back of your manual and they'll set you up for service. They will likely request a copy of the receipt to validate the purchase date.
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