Re: Repairing a Hitachi 55HDS69 plasma - no picture, or sound
Unfortunately, no, I didn't get it fixed (never resolved the horizontal lines). Shortly after my last post in this thread I took a new job out of state and in preparing for the move I sold this TV to someone else to try and repair.
khnitz
Member
Last Activity: 09-09-2024, 02:11 PM
Joined: 12-05-2012
Location: Howell, MI
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Re: Repairing a Hitachi 55HDS69 plasma - no picture, or sound
I did go back and re-check all the connections to the y-buffer-IC boards and the Y-Sus board - those seem good.
It's weird how the missing lines are so evenly spaced, too. Yeah, it seems like something in the addressing is off.Leave a comment:
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Re: Hitachi 55HDS69 - missing horizontal lines
Tinypic swapped the image on the original link. Here is a picture of the missing lines issue:...Leave a comment:
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Re: Repairing a Hitachi 55HDS69 plasma - no picture, or sound
Tinypic swapped the images on the original link. Here is a picture of the missing lines:...Leave a comment:
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Re: Repairing a Hitachi 55HDS69 plasma - no picture, or sound
To keep the repairs aligned with the symptoms for future users searching for solutions, I decided to create a new thread to cover this "missing lines behavior" here:
[url]https://www.badcaps.net/forum/showthread.php?p=585418#post585418[/url]Re: Repairing a Hitachi 55HDS69 plas...:<br /> [url]hLeave a comment:
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Hitachi 55HDS69 - missing horizontal lines
This repair started in another thread as a "no picture/no sound" issue, but after having the lower Y-buffer board repaired I now have picture and sound. To keep the repair symptoms clear, I decided to create a new thread because...
There are horizontal lines missing (evenly spaced across the whole height of the screen):
Thoughts? Would this mean the Y-sustain board also needs repair? -
Re: Repairing a Hitachi 55HDS69 plasma - no picture, or sound
I received the lower Y-buffer board back and installed it - and I now have picture and sound! But...
There are horizontal lines missing (evenly spaced across the whole height of the screen):
Thoughts? Would this mean the Y-SUS board also needs repair?Leave a comment:
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Re: Repairing a Hitachi 55HDS69 plasma - no picture, or sound
I removed the upper buffer board to check for any shorts across the buffer IC caps, and there were none.
Again, to clarify my symptoms: there was no video or audio when the TV was turned on - I would get the solid blue LED on the front. With the lower buffer board removed, the upper half of the screen would come on. And, on the lower buffer board, 3 of the buffer IC caps measured shorts across them. So, my lower buffer board (ND60200-0034) is out for repair, and I'll post how things are working when I get...Leave a comment:
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Re: Repairing a Hitachi 55HDS69 plasma - no picture, or sound
Also, in checking the buffer IC caps on that lower board, 3 of them read shorts across, them. The board is now being sent off for repair.Leave a comment:
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Re: Repairing a Hitachi 55HDS69 plasma - no picture, or sound
So, as was pointed out here, the new power supply board did not resolve the issue with this TV.
So, on to the buffer boards, as was suggested.
I removed the lower one, first, and powered the TV on - the upper 1/2 of the screen lit up!
So, the next step will be to find a buffer board (or a repair service) and install that and see if I can get this all fixed
Last edited by khnitz; 08-21-2015, 08:11 PM.Leave a comment:
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Re: Repairing a Hitachi 55HDS69 plasma - no picture, or sound
Some more detail, when I unplugged the connector circled in red in the attached image, there was no voltage (0.2V or less) on any of the pins of the connector on the power supply board. This was measured after the power-up routine was completed (no error LEDs lit on the control board, and solid Blue status LED on the front of the TV)....Leave a comment:
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Repairing a Hitachi 55HDS69 plasma - no picture, or sound
I got this TV from a friend who said the original problem was that it had no picture, but sound, and would take several tries to power up until it finally stopped powering on at all. The TV sat in storage from some years (it's a 2006 model) until now - since they are moving to a new home, they didn't want to bring this with.
So, having repaired a bunch of home electronics items over the years, I thought I'd take a gamble on this one.
The TV completes its power-up cycle with no error LEDs lit. The front LEDs will complete the power up cycle and show a solid Blue LED,... -
FIXED! Panasonic TC-P65S1 "1-blink" error code
This TV is FIXED and ready for the kids to enjoy over the holidays! I replaced the A-board and it is now working. With the new, large electrolytics on the power supply boards, too, this one should hopefully serve my family for a long time to come.Leave a comment:
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Re: Panasonic TC-P65S1 - begins power up, then shuts off
After some more information gathering and measuring of outputs from the power supply boards, I'm ording up a replacement A-board and will roll-the-dice with that. Should have further results by week's end.Leave a comment:
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Re: Panasonic TC-P65S1 - begins power up, then shuts off
I think these were United Chemicon. They are bulging, though likely not vented. I have seen my fair share of vented caps from working with electronic ballast designs years ago - those were usually field returns of 120V units that were installed on 277V lines :-)Leave a comment:
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Re: Panasonic TC-P65S1 - begins power up, then shuts off
Thanks, Tom. I'm trying to narrow down the issue so that I only have to replace the truly bad board. I'm leaning towards the A-board, at this time, too.
I'll try to post a picture of the venting 'lytics that I replaced. They were obviously bulging. Either way, I'll feel better knowing that they were replaced, once this is up and running again.Leave a comment:
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Panasonic TC-P65S1 - begins power up, then shuts off
Make: Panasonic
Model: TC-P65S1
Description: 65" Plasma, Manf. Jan-2010
I picked up this TV to give a go at repairing it, rather than just letting it get thrown out. The TV did not power on anymore. After pressing the power button on the unit, there would be a first relay click, then a second (and the cooling fans would start spinning). A second later there would be another relay click (the fans turn off) and a last click and then the front power LED begins blinking steady (1s on, 3s off). I replaced the stressed large 'lytics on the MULTI and SUS power boards...Last edited by khnitz; 12-05-2012, 03:50 PM.
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