Re: Panasonic TX-P42ST31B 7blinks
Thx for info guys..I've a bag full of screws from scrapped sets so will install locking washers..Will resolder tabs underneath..Gotta deal with reseating them buffer tabs tho 😥..they a pain in but..will solder vsus input cable direct to pins also..once again guys thx...
sienoki
sienoki
Last Activity: 10-08-2023, 10:11 AM
Joined: 01-01-2012
Location: uk..LEEDS
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Re: Panasonic TX-P42ST31B 7blinks
That voltage measurement was without X n Y connected..Will make sure it's correct values before returning it..thx fella...Leave a comment:
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Re: Panasonic TX-P42ST31B 7blinks
Watched it earlier for a couple hrs with no problems..Will keep testing it for a few days before returning it...Leave a comment:
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Re: Panasonic TX-P42ST31B 7blinks
If it was my set I'd put small heatsinks on all the IGBT's etc for good measure...Leave a comment:
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Re: Panasonic TX-P42ST31B 7blinks
Cut the VSUS grey wire mid point n attached bulb..fired up as normal
Soldered n taped wire back up n gonna run it a few hrs..ive treble checked my soldering with jewelers eye n tightened up the screws good..thx for info guys
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Re: Panasonic TX-P42ST31B 7blinks
Ive rubbed them hard with IPA n logo fine..Ive installed the 2 R6015ANX n fuse in PSU n now have 230v then ramps down to 216v then slowly decreases..so PSU now good..
Ive got a bulb tester with croc clips attached n a 150w bulb..do i have to cut into vsus cable half way n run in series or just clip onto white connector on SN board..thx...Last edited by sienoki; 12-24-2016, 08:51 AM.Leave a comment:
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Re: Panasonic TX-P42ST31B 7blinks
componentalliance for 6 main IGBTs n MBTV electronics for RF1501/DAF30A..SMD transistors from M-core..n ics from chipbay_store..went with cheaper option at 1st with just the 6 IGBTs n really i should have just bought afull kit from 1 supplier cos it aint worked out cheap doh...Leave a comment:
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Re: Panasonic TX-P42ST31B 7blinks
Q661 n Q441 ok cant find Q451 as yet doh..my bad the 1 under heatsink..yeah no beeps...Last edited by sienoki; 12-23-2016, 05:16 PM.Leave a comment:
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Re: Panasonic TX-P42ST31B 7blinks
No beep on either leg of DG302 so thats safe to solder back on?..just need to buy some heatsink glue when repaired hopefully...Leave a comment:
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Re: Panasonic TX-P42ST31B 7blinks
TPVFG bottom left black probe on test point n ran red along all buffer connectors n no beeps
so they be ok...
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Re: Panasonic TX-P42ST31B 7blinks
I get a 5sec beep then 481 n 1sec beep then OL
IVE ordered R6015ANX for PSU are they ok?...Leave a comment:
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Re: Panasonic TX-P42ST31B 7blinks
Ive pulled the Q451-DG302 out n it reads OL on both legs with neg probe on tab?...Leave a comment:
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Re: Panasonic TX-P42ST31B 7blinks
Thx vinceroger69..ive replaced all them parts from that blog except Q451..neg probe on collector n pos probe on gate i get OL so part failed also?
Should i pull that out of circuit n see if short gone..thx...Leave a comment:
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Re: Panasonic TX-P42ST31B 7blinks
480 1 way n OL the other in diode mode...Leave a comment:
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Re: Panasonic TX-P42ST31B 7blinks
Ground lug on Sn board to white connector gives constant beep on 1 leg and OL on the other leg and thats the same with tv chassis being the ground..so the SN board is still shorted right?...Leave a comment:
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Re: Panasonic TX-P42ST30 with exploding diodes....
ls that neg to chassis ground n pos to white connectorLeave a comment:
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Panasonic TX-P42ST31B 7blinks
Thought id try n fix this set for a friend..common 6 IGBTs blown..bought the repair kit and also replaced IC501/IC502..Q531/501
So its an TNPA5330 SN board and after replacing the parts still 7 blinks..the 2 fets and fuse has also failed on the PSU..ive ordered them so im going to get PSU back to life before going any further with SN board..after reading all the posts on here regarding TNPA5330 thought id double check my soldering Q401-30F131 wasnt soldered correctly with the tab.
So my question is how do i test the SN for shorts..thx -
Re: Panasonic TX-P42ST30 with exploding diodes....
How do you test TNPA5330 board after repair kit fitted to see if still shorted or not..thxLeave a comment:
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Re: help with a Philips 47" LCD power fault
Hi..ive just picked one these sets up today with smashed screen..psu is working fine..if you dont repair yours id be willing to sell this oneLeave a comment:
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Re: Panasonic TH42PZ82B standby light flashes 10 times
Its not that hard 2 do..them smd caps r small but with a steady hand & patience u should be fine..ive done 2 pannys now with same fault & i only replaced the caps & left the chips alone..reflow the solder on the pins of the 2 boards with new solder as it makes it allot easier when removing & a solder sucker is sufficient 2 use..remember 2 put the 2 plastic shields in place when reasemblingLeave a comment:
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