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Crumbtrail TV Forums: TV Equipment: TV Repair Forum:
17pw26-4

 
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jts1957
Veteran


Aug 16, 2015, 7:18 PM

Post #26 of 35 (2243 views)
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Re: [bubba21] 17pw26-4 [In reply to] Can't Post
On prior: after press gets you 15v. Does it stay or does it go?

Pin 6: ST_BY = I AM SURE Reads zero when the set is unplugged ... I Need TWO answers: 1) what does it read when set is plugged into mains? & 2) what does it read as/after the power button is pressed, then released ONCE? (And does it stay or does it go?)

Also as a side project you may wish to quickly test the parts listed in this kit.
http://www.ohmsupplies.co.uk/...IR-KIT-Q813/Q814-S/C

I assume you've watched: https://www.youtube.com/watch?v=izJnFWLnzR0


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Location: Far, Far Away

(This post was edited by jts1957 on Aug 16, 2015, 7:35 PM)


bubba21
New User

Aug 16, 2015, 7:35 PM

Post #27 of 35 (2237 views)
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Re: [jts1957] 17pw26-4 [In reply to] Can't Post
PIN 4 15V stays. answer 1 PIN 6 ST_BY, when plugged into mains reads 00.0. answer 2 when the power button is pressed then released ONCE the reading is 0.00 and stays like this


jts1957
Veteran


Aug 16, 2015, 7:40 PM

Post #28 of 35 (2234 views)
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Re: [bubba21] 17pw26-4 [In reply to] Can't Post
Pin 8: BL_ON/OFF = I AM SURE Reads zero when the set is unplugged ... I Need TWO answers: 1) what does it read when set is plugged into mains? & 2) what does it read as/after the power button is pressed, then released ONCE? (And does it stay or does it go?)


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Location: Far, Far Away


bubba21
New User

Aug 16, 2015, 7:48 PM

Post #29 of 35 (2232 views)
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Re: [jts1957] 17pw26-4 [In reply to] Can't Post
 Pin 8: BL_ON/OFF zero unplugged. answer 1 reads 0.00 when in mains answer 2 when pressed then released ONCE the reading is 0.00 and stays like this


jts1957
Veteran


Aug 16, 2015, 8:00 PM

Post #30 of 35 (2225 views)
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Re: [bubba21] 17pw26-4 [In reply to] Can't Post
Starting to look like it may be Main board.

Did you check my last edits?

Can you confirm pin labels on ODD pins of PL816 from #11 on down.


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Location: Far, Far Away


bubba21
New User

Aug 16, 2015, 8:20 PM

Post #31 of 35 (2221 views)
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Re: [jts1957] 17pw26-4 [In reply to] Can't Post
can not confirm as the board is not marked up, nor is the 28 pin plug, i only have the schematic for the power board, and this is the only way that gives me the information for what number pins are, yes checked your last edits. pin 11 on my schematic says it should be 12v and its reading 0.00


(This post was edited by bubba21 on Aug 16, 2015, 8:26 PM)


bubba21
New User

Aug 16, 2015, 8:37 PM

Post #32 of 35 (2212 views)
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Re: [bubba21] 17pw26-4 [In reply to] Can't Post
the main board! is that the power board your talking about or the av board (mother board)


jts1957
Veteran


Aug 16, 2015, 9:41 PM

Post #33 of 35 (2202 views)
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Re: [bubba21] 17pw26-4 [In reply to] Can't Post
The schematic is unclear on these. Perhaps you can look at the foils on back of board to confirm? There are TWO 5V's & TWO 12V's.

Pin 11 then must be +12V (NOT +12V_1)????
Pin 13 then must be +33v
Pin 15 IS +3.3VSTBY (there ain't NO +3V)
Pins 17, 19 & 21 then must be +5V (NOT +5VSTBY)????

These Power & Main Right? http://www.shopjimmy.com/toshiba/40bv700b


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Location: Far, Far Away

(This post was edited by jts1957 on Aug 16, 2015, 9:44 PM)


bubba21
New User

Aug 17, 2015, 11:19 PM

Post #34 of 35 (2194 views)
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Re: [jts1957] 17pw26-4 [In reply to] Can't Post
have not yet had a look under the board but my schematic says

Pin 11 is +12v
Pin 13 is +33v
Pin 15 is +3.3vVSTBY
Pins 17, 19 & 21 are +5
Pin 26 is +24VA

can not gain access to http://www.shopjimmy.com/toshiba/40bv700b


jts1957
Veteran


Aug 18, 2015, 12:27 AM

Post #35 of 35 (2191 views)
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Re: [bubba21] 17pw26-4 [In reply to] Can't Post
Vestel 20519900 (17PW26-4) Power Supply Unit

$68.93
Part number (20519900) can be found on barcode sticker.

____________________________________________________
Vestel 20522664 (17MB35-4) Main Board

$84.95
Part number can be found on the sticker.


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Location: Far, Far Away

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