My friend brought me over the display control board for his Jenn-Air SVD48600P oven because the display was no longer lighting up. Just like the original post from Bluto, the problem was C3. It measured completely open with my ESR cap meter. What is strange is...
GeorgeT
Member
Last Activity: 01-10-2024, 06:50 PM
Joined: 09-23-2010
Location: Elverson PA
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My friend brought me over the display control board for his Jenn-Air SVD48600P oven because the display was no longer lighting up. Just like the original post from Bluto, the problem was C3. It measured completely open with my ESR cap meter. What is strange is...Last edited by GeorgeT; 01-10-2024, 05:59 PM. -
Re: Vizio M43-C1 No Backlights
Thank you diff for the suggestion to get a temperature meter and follow a profile. Without that I was just guessing and getting nowhere. Also the preheating of the board to prevent popcorning was vital. Without these suggestions, the TV would be going to the recycling center.Leave a comment:
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Re: Vizio M43-C1 No Backlights
Success! My fake Amtech flux finally arrived so I attempted the re flow on the 2 BGA's on my Vizio D55u-D1 motherboard.
Steps I took...
1) Removed the heat sink & old thermal paste
2) Removed the 4 rubber spacer pads under the board. Major pain to get them off cleanly.
3) Placed board in preheated oven 100c/200f for 10 minutes to remove moisture and warm whole board up.
4) Removed board from oven, then applied flux around all 4 sides of each BGA. I tilted the board and heated the flux with the heat gun...Leave a comment:
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Re: Vizio M65-C1 - No Power
@grimacelord did you have any luck reflowing that first chip again? I'm working on a similar issue.Leave a comment:
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Re: Vizio M43-C1 No Backlights
I ordered the TM902C Temperature Meter and some fake Amtech flux from Banggood. I'll continue the testing when my package arrives. Thanks for all of your help.
TM902C Temperature Meter...
[url]https://www.banggood.com/TM902C-LCD-K-Type-Thermometer-Temperature-Meter-Probe-Thermocouple-Probe-p-1213752.html?rmmds=search&cur_warehouse=CN[/url]
Fake Amtech flux...
[url]https://www.banggood.com/2pcs-AMTECH-NC-559-ASM-PCB-BGA-Reballing-Solder-Flux-Paste-10CC-p-960102.html?rmmds=search&ID=522302&cur_...Leave a comment:
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Re: Vizio M43-C1 No Backlights
Thank you nomoresonys & diff for your great advice. I will definitely order one of those TM902c meters today. Without it, I am working in the blind. Also I will try to match that heat profile as close as possible. What would be a good, no clean flux to use that you have had good experience with?Leave a comment:
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Re: Vizio M43-C1 No Backlights
I just unplugged the wifi module, but no luck. Thanks for the suggestion.Leave a comment:
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Re: Vizio M43-C1 No Backlights
Thanks for your reply Neilc6. I will stay focused on reflowing the processor on the main board then. What is a safe amount of time to keep the heat gun pointing at the processor? My heat gun is a Master heat gun hg-501a that goes from 500 Degrees to 750 Degrees F. It moves a lot of air at 23 cfm.Leave a comment:
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Re: Vizio M43-C1 No Backlights
I removed the back cover on the Vizio D55u-D1 and used a heat gun to heat up the heat sink. I keep it on for 45 seconds, moving it all around to heat it evenly. After 15 seconds, I plugged the TV in and turned it on. Still no picture. I tried this several times. I then removed the large heat sink and used the heat gun to heat up both BGA chips for around 6 seconds on each one. I let the board cool for a few minutes, then plugged it in. Still black screen. Maybe I'm not keeping the heat gun on the chip long enough. It's about 1/2 inch away from the...Leave a comment:
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Re: Vizio M43-C1 No Backlights
Hi Nick. Specifically what flux would you use for a BGA reflow? I have a Vizio D55u-D1 that does not power up. I will use my Master heat gun that has a temperature range of 500F to 750F to warm up the heat sink (as you mentioned in other threads) to see if the problem is with the BGA's. If the TV powers up, then I will want to remove the heat sink and try to reflow the chips properly. Thanks for any help.Last edited by GeorgeT; 10-16-2020, 07:55 AM.Leave a comment:
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Re: New Members - please post your introductions here
Hello,
My name is George from PA. I have enjoyed finding TV's and electronics in the trash and fixing them since I was a little kid. I worked in the video game industry during the golden age of video arcades fixing circuit boards. I worked for Commodore / Amiga / GVP computers during the 80's and 90's.
I co-own a puzzle company now, but I never lost my love for ripping into something with an electrical cord attached. I just bought the ESR-micro v4.0 meter and love it. I will write a review shortly.Leave a comment:
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