Re: JVC JLC42BC3000 screen froze on "JVC" logo.
I found one for sale-
[url]https://secure.m.newegg.com/ShoppingCart[/url]
Is it a simple de solder and re solder? How do I program the nand flash? Thank you!Re: JVC JLC42BC3000 screen froze on ...sh? Thank you!Re: JVC JLC42BC3000 screen froze on "JVC" logo.
I found one for sale-
[url]https://secure.m.newegg.com/ShoppingCart[/url]
Langston
Member
Last Activity: 10-23-2015, 01:30 PM
Joined: 10-07-2015
Location: Springfield
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Re: JVC JLC42BC3000 screen froze on "JVC" logo.
Once I freeze the NAND and boot the tv it works properly until I turn it back off....Leave a comment:
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Re: JVC JLC42BC3000 screen froze on "JVC" logo.
Thanks, I'm doing my best to try and only cool the Nand flash. I taped the surroundings off but i'm sure its not 100% pin point. If I purchase a Nand flash is it a simple re-install or do I need to load it somehow with info? Sorry I'm very new to electronics....Leave a comment:
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Re: JVC JLC42BC3000 screen froze on "JVC" logo.
I detached the board and looked underneath to find this HYNIX SEMICONDUCTOR H27UAG8T2BTR-BC. I sprayed it with upside down air can and sure enough it boots up as normal. Any idea if these are available and if so are there any special instructions for installing or is it just a desolder and re-solder swap? Thanks for any help! Much appreciated....Leave a comment:
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Re: JVC JLC42BC3000 screen froze on "JVC" logo.
I've attach a picture and circled the spot where freezing temporarily fixes it. I also noticed there are two aluminum electrolytic capacitors in the circle CE15- "14.4" and CE24 "3.1" both caps say 14 220 16s on the top....Last edited by Langston; 10-09-2015, 10:54 PM.Leave a comment:
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Re: JVC JLC42BC3000 screen froze on "JVC" logo.
Thanks, I've isolated and sprayed U18 with no luck. Im very new to this and am not sure what the IC is. Could it be a bad SMD capacitor reacting to the cold?...Leave a comment:
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Re: JVC JLC42BC3000 screen froze on "JVC" logo.
Thanks budm, Which is the HDMI chip in the picture you provided from shopjimmy? Also what is the round (capacitor??) CE39?...Leave a comment:
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Re: JVC JLC42BC3000 screen froze on "JVC" logo.
I've isolated the area to this corner of the board near the HDMI inputs. Still can't pinpoint the exact problem. If I freeze individual components it doesn't boot but if I freeze the whole corner it boots and works properly. Any idea what component would be fixed by freezing on this corner?
See attachement-...Leave a comment:
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Re: JVC JLC42BC3000 screen froze on "JVC" logo.
Your on to something! I first tried freezing the eeproms (or what I think are the eeproms) and no luck so in frustration I sprayed the entire board plugged it in and the logo went away and it went on to "no signal" and worked perfectly. I used the power off button and it turned off normally. No again it is stuck on the Jvc logo. I tried to isolate the problem by freezing in sections and trying to turn it on but no luck. What could this mean? Thanks!...Leave a comment:
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Re: JVC JLC42BC3000 screen froze on "JVC" logo.
I was able to talk to Ablemantv but as suspected this is how they make a living and he is not willing to tell me the solution. Also they do not sell an eeprom for this tv. I really don't want to give up but Im running out of options..Leave a comment:
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Re: JVC JLC42BC3000 screen froze on "JVC" logo.
Thanks! I sent them a message this morning. Is it possible to test an eeprom with a multi-meter?...Leave a comment:
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Re: JVC JLC42BC3000 screen froze on "JVC" logo.
Thanks everyone for the replies. After doing some more digging it seems it most likely is an eeprom issue. I called shop jimmy to try and purchase one but they do not carry them. They also said given the symptoms its most definitely an eeprom. I think I see several eeprom's on the main board but I'm not sure. Is there a way to test them to see which is faulty? Do I just start shooting in the dark and replacing one by one? Is there a inexpensive reliable source for these? Thanks again!
D-Leave a comment:
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Re: JVC JLC42BC3000 screen froze on "JVC" logo.
Thank you budm. I assume the fuses your talking about are F1 and F2?
F1=5.28VDC on both sides of gold terminals
F2=12.29VDC on both sides of gold terminals
These are the voltage regulators that I located, there may be more that I'm not seeing.
1084-VI= 5.22VDC VO=3.28VDC GND=2.05VDC (U5)
1117 #U9: In=5.23VDC Out=3.28VDC ADJ=2.02
1117 #U3: In=5.26VDC Out=3.29VDC ADJ=2.04
949D32: In=12.25VDC GRN=0.00 Out=5.04 (U17)
...Leave a comment:
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Re: JVC JLC42BC3000 screen froze on "JVC" logo.
Attached pictures-...Leave a comment:
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JVC JLC42BC3000 screen froze on "JVC" logo.
Hi, I'm trying to repair the logic board " 3642-1302-0150 " on my JVC LCD tv. I'm looking for any help possible. I've repaired another in the past by mailing off the logic board but I'm more interested in learning how to repair it myself. I have the back cover removed, multi-meter, pencil, paper, and a double shot of espresso ready in hand. I do not see any puffed capacitors or burn marks. Currently the screen lights up and the JVC logo sits in the screen. No buttons work and TV only powers down if I unplug it. Where should I start? Thank you in advance-
LangstonLast edited by Langston; 10-08-2015, 02:43 PM. -
Re: New Members - please post your introductions here
Hello, My name is Dustin. I'm from Missouri. I'm looking to learn how to repair electronics.Leave a comment:
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