Re: Toshiba 42HL196 LCD: Red blinking light
With my meters negative lead on a ground where circuit board bolts to tv. And positive lead on top a heatsink im getting voltage reading..Does this mean i have a short?
itshockedme
Member
Last Activity: 11-22-2012, 01:35 AM
Joined: 09-17-2012
Location: Tucson, Arizona
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Re: Toshiba 42HL196 LCD: Red blinking light
Help!!Leave a comment:
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Re: Toshiba 42HL196 LCD: Red blinking light
Is the large DC filter cap (C820) the startup cap in the power supply?...Leave a comment:
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Re: Toshiba 42HL196 LCD: Red blinking light
Can you give me some tips on how to test the voltages from the power supply? I just want to make sure that I'm in the right area....Leave a comment:
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Re: Toshiba 42HL196 LCD: Red blinking light
uuhhggg..im stuck can anyone help me troubleshoot this power supply board??? Please I have meter an schematics and can take pics or whaterever is needed. Im know its not seine board because it powered on a couple times for a few seconds....Leave a comment:
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Re: Toshiba 42HL196 LCD: Red blinking light
Thanks for input that is the same place I started also but no luck only clicking sound after replacing Q880 which is IC STRW6765...Leave a comment:
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Re: Toshiba 42HL196 LCD: Red blinking light
Using the updated information posted by RON_CET (from the troubleshooting flow chart on page 4), I am getting a 3.28V reading on PIN 7 of CN49A. For some reason, I am not getting any voltage reading on PIN 5 of P812A.
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Re: Toshiba 42HL196 LCD: Red blinking light
Thanks budm, I really appreciate you taking the time to assist me. I feel like I've been up against a brick wall with this one. The DC voltage on fuse F820 when the TV was plugged in (power switch not activated) was fluctuating from 165.9V and 154.0V when clicking. Once the TV was plugged in, the relay was cycling (two clicks) consistently. The DC voltage on fuse F820 when plugged in and power switch activated was fluctuating from 167.0V and 153.6 when clicking. Are these readings within range? Any ideas on where to go from here? :con...Leave a comment:
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Re: Toshiba 42HL196 LCD: Red blinking light
Thank you for the update on the troubleshooting info. It's very helpful....Leave a comment:
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Re: Toshiba 42HL196 LCD: Red blinking light
Q820 can be found on page 19 (from the toshiba manual).
Q880, C888, C889, C890 and D884A can be found on page 21.
Q860 can be found on page 22.
I will be checking the DC voltage on fuse F820 right now....Leave a comment:
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Re: Toshiba 42HL196 LCD: Red blinking light
Service manual...Leave a comment:
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Toshiba 42HL196 LCD: Red blinking light
I'm looking for some assistance troubleshooting the power supply board. I've done research and already replaced the most common components suggested by others for the TV not turning on with three blinking lights. After replacing Q820, Q860 and Q880, the TV was making a clicking noise and would not power on. Then, after replacing C888-C890 and D884A, the clicking noise returned when pushing the power button. So I'm back to three lights blinking and no powering up. I have the factory repair manual for reference and can give meter readings if someone can assist me in testing some components and/or... -
Re: Toshiba 42HL196 LCD: Three blinking light problem
Im sorry for slow response i didnt know I had any replies. Yes I am posting service manual now....Leave a comment:
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Toshiba 42HL196 LCD: Three blinking light problem
I'm looking for some assistance troubleshooting the power supply board. I've done research and already replaced the most common components suggested by others for the TV not turning on with three blinking lights. After replacing Q820, Q860 and Q880, the TV was making a clicking noise and would not power on. Then, after replacing C888-C890 and D884A, the clicking noise returned when pushing the power button. So I'm back to three lights blinking and no powering up. I have the factory repair manual for reference and can give meter readings if someone can assist me in testing some components and/or...
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