Re: IC Number on DPS-286 AP/RDENCA336WJQZ Sharp power board
Hi
I found a solution to the heat problem on the TNY264PN (IC7905)! I made a heat sink out of a piece of aluminium plate and bent it up to go onto the aluminium heat sink towards the bottom of the board and used a little bit of heat transfer paste between the top on TNY264PN (IC7905) and bottom of aluminium plate. Have ran tv all day now without a issue. Before I was getting maybe 3 to 4 minutes before it turned off. I know it's probably not the correct fix but is working for now. still unsure...
Jeff1
Member
Last Activity: 06-11-2018, 06:55 AM
Joined: 06-09-2018
Location: Wa
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Re: Shard Lc-52d77x power issues
Hi
I checked the voltage on D7918 and was holding stable at 13.2v by memory but have found a solution to the heat problem on the TNY264PN (IC7905)! I made a heat sink out of a piece of aluminium plate and bent it up to go onto the aluminium heat sink towards the bottom of the board and used a little bit of heat transfer paste between the top on TNY264PN (IC7905) and bottom of aluminium plate. Have ran tv all day now without a issue. I know it's probably not the correct fix but is working for now....Leave a comment:
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Re: Sharp Lc-52d77x power issues
I have a lc52d77x that has dps-286ap-1 power board but has different issues to this post as tv will power up run for a minute or two then turn off (including power light with no flashing) then turn back on after a minute or two then repeat over and over. Has anyone had this issue and know what is the issue. Everything works fine on the tv when on. When it shuts down you can hear a click from back of tv.
Thanks
Jeff
Have noticed the IC7905 gets really hot and shuts down the board. If I keep this cool with vacuum...Last edited by Jeff1; 06-10-2018, 06:35 AM.Leave a comment:
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Re: IC Number on DPS-286 AP/RDENCA336WJQZ Sharp power board
I can't sese it a AC_DETECT pin on PD connector but have noticed IC7905 is getting very hot before the tv turns off.
Sorry I just noticed auto correct changed board number should be DPS-286AP-1.
I seem to have all correct power voltages on the points I have tested until board seems to shut down.
Thanks...Leave a comment:
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Re: Shard Lc-52d77x power issues
Photo of rear of tv...Leave a comment:
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Re: Shard Lc-52d77x power issues
Board number...Leave a comment:
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Shard Lc-52d77x power issues
Hi
I have a lc52d77x that has dps-286ap-1 power board but has different issues to this post as tv will power up run for a minute or two then turn off (including power light with no flashing) then turn back on after a minute or two then repeat over and over. Has anyone had this issue and know what is the issue. Everything works fine on the tv when on. When it shuts down you can hear a click from back of tv.
Thanks
Jeff...Last edited by Jeff1; 06-10-2018, 01:50 AM. -
Re: IC Number on DPS-286 AP/RDENCA336WJQZ Sharp power board
Thanks I will do that when I get home today...Leave a comment:
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Re: What tv brand do you most common repair ?
Hi I have a sharp tv model ic52d77x that when I turn it on it runs for a minute or so then turns off ( no power light or flashing light) after a couple of minutes it will turn back on by itself and start the whole process over. When it turns of there is a loud click like a relay turning off. Have you came across something like this before?Leave a comment:
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Re: What tv brand do you most common repair ?
Hi I have a sharp tv model ic52d77x that when I turn it on it runs for a minute or so then turns off ( no power light or flashing light) after a couple of minutes it will turn back on by itself and start the whole process over. When it turns of there is a loud click like a relay turning off. Have you came across something like this before?
Thanks
Jeff...Leave a comment:
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Re: IC Number on DPS-286 AP/RDENCA336WJQZ Sharp power board
Hi
I got a lc52d77x that has dos-286-1 power board but has different issues to this post as tv will power up run for a minute or two then turn off (including power light with no flashing) then turn back on after a minute or two then repeat over and over. Has anyone had this issue and know what is the issue. Everything works fine on the tv when on. When it shuts down you can hear a click from back of tv.
Thanks
JeffLeave a comment:
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