Re: Th-42px80ba
1st I'd check the SUB5V, SUB3.3V on main board; close pictures of main board?
1st I'd check the SUB5V, SUB3.3V on main board; close pictures of main board?
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Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search. -
Re: Th-42px80ba
pictures attachedAttached Filesif you find these attachements useful please consider making a small donation to the site
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Re: Th-42px80ba
If you need full schematic of A board, see service manual.
SOS10 checks:
- DTV9V
- MAIN9V
- SUB5V
- SUB3.3V
- MAIN3.3V
- BT30V (via SOS10 ckt)
- SUB5V (again, via SOS10 ckt)
- DTV9V (again, via SOS10 ckt)
You might be able find point TPS0S on A board which will go HIGH (>3V) when there is an SOS10 event caused by the last three, otherwise, you need to check the other voltages directly.
Note, TP is on bottom of board - so you will have to lift board up with cables attached and test it there.Attached Filesif you find these attachements useful please consider making a small donation to the site
Last edited by tom66; 02-17-2014, 05:48 AM.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Th-42px80ba
Can any one point me to a service manual pleaseComment
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Re: Th-42px80ba
Try elektrotanya.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Th-42px80ba
ok so to measure these tom do i need to keep turning the tv on and off because at the moment i cant measure any voltages on the main board ?Last edited by sordids999; 04-03-2014, 04:41 PM.Comment
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Re: Th-42px80ba
It would need to be a lot of on and off.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Th-42px80ba
tom im starting to measure the A board but at the moment if i just leave the cables going from the P board to the A board im getting the correct voltages from the psu and its not clicking no moreAttached Filesif you find these attachements useful please consider making a small donation to the site
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Re: Th-42px80ba
have you tried this. Hook all the boards up and try disconnecting P6/P7
To troubleshoot a PDP TV that is shutting down and the power LED blinks 10 times:
��
Isolate the SC and the SS boards (They may cause a 10 blinks shutdown). Disconnecting P6
and P7 allows for only the panel drive section to be driven. If the LED on the SS board and
the LED on the SC board are lid, then the SS and the SC boards are OK and the A board is
suspected to be defective
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If the LEDs on the SS and SC boards are not lid, then isolate them one at time.
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If the SS and SC boards are OK, then the P board may be defective.Comment
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Re: Th-42px80ba
no havent tried this yet but if i connect the following back on the A board but leave the following connections not connected the ss and sc boards are lit up along with the P board giving correct voltagesAttached Filesif you find these attachements useful please consider making a small donation to the site
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Re: Th-42px80ba
So try hooking everything up normally but leave a52 off, still would like resistance check at cable a52 1-2Last edited by tw2005; 04-04-2014, 07:21 AM.Comment
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Re: Th-42px80ba
ok so while doing a few tests on A52 for tw2005 now i have the screen working but still cant use A52 thats still disconnectedComment
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Re: Th-42px80ba
well you have found the problem if it's working with a picture. The SD socket or GS board has shorted the 3.3V line which is one of the several voltages Tom had on the list to check.
glad you like to experiment if this is the case, cut the fault finding down real fast.
It is running with a picture ? yes?Comment
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Re: Th-42px80ba
yes picture working but A52 still disabledComment
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Re: Th-42px80ba
Well that's great mate a TV minus a SD reader , no biggy but cheap as chips to buy or remove the assembly and have a close inspection of it. may be salvageable and we have read of kids depositing coins in there.
No major boards or expense
One quick example, not sure if revision is critical but yours is Rev AE
http://www.ebay.co.uk/itm/Panasonic-...item3f20a00071Comment
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