Author Topic: lcd tv TOSHIBA 32AV500P inverter board MPF3002 (PCPF0207 77C  (Read 697 times)

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ANDRASONI

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I have this problem TV on the inverter module with the above code. It accepts the BL ON command voltage, but so much. Initial was defective Q50 = 2SK2837, after replacing it normally worked, then stopped with the current sound without the backlight . It is equipped with BD9766FV, FA5501A, 2904H212, RM601. The plate is quite "bushy", difficult to follow without a schematic. On somewhere I saw it would be equivalent to DPS-165GP (JQ10003), but it does not look like.

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jordan

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Re: lcd tv TOSHIBA 32AV500P inverter board MPF3002 (PCPF0207 77C
« Reply #1 on: November 10, 2018,10:54:51 »
Resolder Q-51 and R-51
Check:R-91,R-92,R-93,R-94 (all 39Kr on inverter board)
Check C-53 (120uF/450V)
Check R-67,R-68,R-69,R-70 (all 390KR)
Greeting from Slovenia
Jordan Čebron

ANDRASONI

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Re: lcd tv TOSHIBA 32AV500P inverter board MPF3002 (PCPF0207 77C
« Reply #2 on: November 10, 2018,12:44:12 »
Thank you very much.  mr.Jordan, I'll try!

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Re: lcd tv TOSHIBA 32AV500P inverter board MPF3002 (PCPF0207 77C
« Reply #2 on: November 10, 2018,12:44:12 »

ANDRASONI

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Re: lcd tv TOSHIBA 32AV500P inverter board MPF3002 (PCPF0207 77C
« Reply #3 on: November 11, 2018,06:58:45 »
I checked and resolder all the mentioned ones without success. The RL01 does not work. The original Q50 transistor was 2SK4107 and I replaced it with 2SK2837, it worked, could this be a problem? I compared the catalog data and a little different Ton-Toff,in the rest 2SK2837 is superior to the original. Thank you once again mr. Jordan for involvement. From Romania, all the best!

ANDRASONI

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Re: lcd tv TOSHIBA 32AV500P inverter board MPF3002 (PCPF0207 77C
« Reply #4 on: November 15, 2018,11:46:58 »
It resolved, I missed the R94 and R70 :c017: Mr.Jordan

jordan

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Re: lcd tv TOSHIBA 32AV500P inverter board MPF3002 (PCPF0207 77C
« Reply #5 on: November 15, 2018,15:11:45 »
 :08:
Greeting from Slovenia
Jordan Čebron

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Re: lcd tv TOSHIBA 32AV500P inverter board MPF3002 (PCPF0207 77C
« Reply #5 on: November 15, 2018,15:11:45 »

nordix

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Re: lcd tv TOSHIBA 32AV500P inverter board MPF3002 (PCPF0207 77C
« Reply #6 on: September 26, 2019,13:01:23 »
Hi . I know this topic is old , but it seems I have a similar problem . My Toshiba Regza have the same inverter board . It have sound but no picture . When I checked with the flashlight , I could see also the picture . I found the MOSFET 2SK4107 and the 4Ah safety ( I don't know how to say in english )  faulty . I replaced those parts . The tv worked one year . It blow up the same parts a few weeks ago . I replaced them , but after a day they are uneuseful again . What should I check ? What was the problem on the tv you repaired ?
Thank you .

 

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