Re: Hands On with The 17PW07-2 Power Board
Changed R338 4.7Mohm to be safe, C101 and C103 measuring 344V across. No idea where I got 60V when i tested earlier. FR100, FR101 not blown. C102 and C122 fluctuating around 300V.
el3ctr0m4n
Member
Last Activity: 02-06-2017, 02:31 PM
Joined: 01-08-2015
Location: Blackpool, Lancashire
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Re: Hands On with The 17PW07-2 Power Board
Next update, under load, C101 and C103 show 60VDC charging, Q201 shows 60VDC at the gate but the Q202 shows 0.0odd. We are getting somewhere (again)Leave a comment:
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Re: Hands On with The 17PW07-2 Power Board
OK, all do not show s/c however i have come across R338 from hot to cold side, this tests O/C. Again, i cant see how this can be the problem, but never the less, its getting changed. i am also suspicious of IC300 and IC302Last edited by el3ctr0m4n; 02-13-2016, 12:38 PM.Leave a comment:
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Re: Hands On with The 17PW07-2 Power Board
Thanks Vince and Mike, that is a very wise idea. I shall post back the results.Leave a comment:
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Re: Hands On with The 17PW07-2 Power Board
Hi Michael, I think my eyes are failing as I cant seem to locate C103 on board or the schematics....Leave a comment:
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Re: Hands On with The 17PW07-2 Power Board
I have tested the diodes and FETs in circuit, they do not measure S/C as expected, but i am going to cut a leg of each of the 6 output diodes and supply some resistance measurements correctly although I fail to believe that the problem is here at such a late stage of the circuitry. The FETs I shall remove completely.Leave a comment:
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Re: Hands On with The 17PW07-2 Power Board
Ok, few more points, heating the board up does not make any difference. However, the touch sensitive buttons on the front panel react with a beep as normal when they are touched, still no standby light, or voltage.Leave a comment:
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Re: Hands On with The 17PW07-2 Power Board
Here is a picture of my board. Just for future reference.
Also attached is the schematics for this board.
(17PW07-02 V2)...Leave a comment:
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Re: Samsung UE32F5000 (UK model) with no display. Power supply is OK.
Disconnect connections from leds, test whether strips are receiving voltage by testing connector pins to leds. You may find that no power is transferred.
.Leave a comment:
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Re: Hands On with The 17PW07-2 Power Board
Ok. I have the schematic for this board and i have encountered a no standby voltage.
The radial fuses at ACin (PL101) are not blown. There are two voltages for standby, 5v & 4.25v (according to the pins of PL205 - power to logic) Am i correct in stating that the IC302 is responsible for sending power-on signal?Leave a comment:
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Re: Hands On with The 17PW07-2 Power Board
thanks vince.Leave a comment:
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Re: Hands On with The 17PW07-2 Power Board
found the 3rd set now. still test good.Leave a comment:
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Re: Hands On with The 17PW07-2 Power Board
I can only see two sets of rectifiers, all diodes test correctly. Does anybody happen to know of a place i could get some schematics for this board?Leave a comment:
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Hands On with The 17PW07-2 Power Board
Hello everyone. I am Chris and this is the first time I have asked for assistance from BadCaps.Net
I can usually find the information in the forums but on this occasion I've drawn a blank.
The Problem...
The TV is a Toshiba 32BL502b which contains the power board 17PW07-2 which I assume is manufactured by Vestel.
When plugged in for the first time everything was as normal, but once put into standby the tv would not revive.
I have tried unplugging for a few hours and there is no change.
If I unplug from the mains... -
Re: New Members - please post your introductions here
Hey there bad caps administration and all visitors.
First of all, I have to thank you all for hosting a great site for knowledge.
A little about myself... I work as a retail manger through the day (borinnnng! ) and take my hands to tvs, phones, laptops,pc and anything that has an electronic pulse (or at least should have). I do not watch much tv, I leave that to the wife, and I find that fault finding in electronics gives me plenty to do, and I like the returns such as thankful friends and family....Leave a comment:
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