intergrated tcon board ic rt6939 vestel polaroid p55up0277a

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  • Diah
    Badcaps Legend
    • Feb 2013
    • 6397
    • Germany
    #21
    Re: intergrated tcon board ic rt6939 vestel polaroid p55up0277a

    for this cheap sets / mainboards don't have extra video processing ICs also usually all signal come from Main IC direct via LVDS to the panel.

    if you could upload focused photos on the main boards and the LVDS sockets from up and down side if there any remark on the pins.

      Comment

      • arizanotlari
        Senior Member
        • Nov 2014
        • 158
        • Turkiye
        #22
        Re: intergrated tcon board ic rt6939 vestel polaroid p55up0277a

        Originally posted by jimbofz
        hi did you trace the source of the enable voltage from the main board? as Diah
        sugested ?
        ive studied the circuit and cant see where the enable comes from
        can you help? thanks
        Diah misunderstands me. Your panel is short circuited. I replace this ic but still not working. I send tv to panel repair workplace and they replace cofs.

        https://yadi.sk/i/_6VKMJQ4rQYiAA This is circuit diagram of mb120.
        https://www.badcaps.net

          Comment

          • Diah
            Badcaps Legend
            • Feb 2013
            • 6397
            • Germany
            #23
            Re: intergrated tcon board ic rt6939 vestel polaroid p55up0277a

            Originally posted by arizanotlari
            Diah misunderstands me. Your panel is short circuited. I replace this ic but still not working. I send tv to panel repair workplace and they replace cofs.

            https://yadi.sk/i/_6VKMJQ4rQYiAA This is circuit diagram of mb120.
            i see,,, so you have DC to DC correct working before replace COF.

            the signal which come from main boards via R440 100R connect to lvds socket pin30

              Comment

              • jimbofz
                Badcaps Veteran
                • Apr 2013
                • 539
                • uk
                #24
                Re: intergrated tcon board ic rt6939 vestel polaroid p55up0277a

                Originally posted by Diah
                for this cheap sets / mainboards don't have extra video processing ICs also usually all signal come from Main IC direct via LVDS to the panel.

                if you could upload focused photos on the main boards and the LVDS sockets from up and down side if there any remark on the pins.
                heres the pics ,
                ive studied cct vbyone/lvds options
                and found r440 shown as : L dim en pin 22
                on the main board socket for lvds pin 22 is earth
                and pin 30 doesnt appear to have any connections to it ?
                after removing main board and tracing pin 30 ?
                i must be missing something
                Attached Files
                Last edited by jimbofz; 11-15-2020, 04:42 AM.

                  Comment

                  • jimbofz
                    Badcaps Veteran
                    • Apr 2013
                    • 539
                    • uk
                    #25
                    Re: intergrated tcon board ic rt6939 vestel polaroid p55up0277a

                    Originally posted by arizanotlari
                    Diah misunderstands me. Your panel is short circuited. I replace this ic but still not working. I send tv to panel repair workplace and they replace cofs.

                    https://yadi.sk/i/_6VKMJQ4rQYiAA This is circuit diagram of mb120.
                    i didnt realise that it was possible to replace cofs

                      Comment

                      • Diah
                        Badcaps Legend
                        • Feb 2013
                        • 6397
                        • Germany
                        #26
                        Re: intergrated tcon board ic rt6939 vestel polaroid p55up0277a

                        Originally posted by jimbofz
                        heres the pics ,
                        ive studied cct vbyone/lvds options
                        and found r440 shown as : L dim en pin 22
                        on the main board socket for lvds pin 22 is earth
                        and pin 30 doesnt appear to have any connections to it ?
                        after removing main board and tracing pin 30 ?
                        i must be missing something
                        could you locate on boards the U12 the MFC SPI 4Mb ?

                          Comment

                          • Diah
                            Badcaps Legend
                            • Feb 2013
                            • 6397
                            • Germany
                            #27
                            Re: intergrated tcon board ic rt6939 vestel polaroid p55up0277a

                            this set had 2 SPI U13 for MBOOT. at your case its function... and the other U12 for MFC this is i do suspected.. MFC the displaying of picture.. normally the SW of vestel before we do have 3 parts 1-MBOOT.bin 2-MFC.bin & 3-opertion firmware. if MFC corrupted no display as yours condition.

                              Comment

                              • jimbofz
                                Badcaps Veteran
                                • Apr 2013
                                • 539
                                • uk
                                #28
                                Re: intergrated tcon board ic rt6939 vestel polaroid p55up0277a

                                on my 17mb120 theres a u11 and a u13 ,but no u 12?
                                but on the circuit diagram u 12 ie shown.

                                  Comment

                                  • arizanotlari
                                    Senior Member
                                    • Nov 2014
                                    • 158
                                    • Turkiye
                                    #29
                                    Re: intergrated tcon board ic rt6939 vestel polaroid p55up0277a

                                    Originally posted by Diah
                                    i see,,, so you have DC to DC correct working before replace COF.

                                    the signal which come from main boards via R440 100R connect to lvds socket pin30
                                    Yes. Tvs all functions working correctly jus missing same panel pcb voltages.
                                    https://www.badcaps.net

                                      Comment

                                      • Diah
                                        Badcaps Legend
                                        • Feb 2013
                                        • 6397
                                        • Germany
                                        #30
                                        Re: intergrated tcon board ic rt6939 vestel polaroid p55up0277a

                                        Originally posted by jimbofz
                                        on my 17mb120 theres a u11 and a u13 ,but no u 12?
                                        but on the circuit diagram u 12 ie shown.
                                        are you sure ? on the downside did you check too.. look on number of it in schematic and look after all SPI with 8 pins

                                          Comment

                                          • arizanotlari
                                            Senior Member
                                            • Nov 2014
                                            • 158
                                            • Turkiye
                                            #31
                                            Re: intergrated tcon board ic rt6939 vestel polaroid p55up0277a

                                            Originally posted by jimbofz
                                            on my 17mb120 theres a u11 and a u13 ,but no u 12?
                                            but on the circuit diagram u 12 ie shown.
                                            U12 is spi of U14. Your chassis have single lvds option and don't have U14.
                                            I insist on cof failure.
                                            https://www.badcaps.net

                                              Comment

                                              • Diah
                                                Badcaps Legend
                                                • Feb 2013
                                                • 6397
                                                • Germany
                                                #32
                                                Re: intergrated tcon board ic rt6939 vestel polaroid p55up0277a

                                                Originally posted by arizanotlari
                                                U12 is spi of U14. Your chassis have single lvds option and don't have U14.
                                                I insist on cof failure.
                                                arizanotlari... the schematic you upload here are for ONE CHANNEL LVDS. as the set of OP. MFC SPI U13 not U14..
                                                do you have recovery firmware of this set with 3 files???
                                                i have MFC.bin used by vestel such 246009 & 240226 which used over most vestel.
                                                Last edited by Diah; 11-15-2020, 09:03 AM.

                                                  Comment

                                                  • arizanotlari
                                                    Senior Member
                                                    • Nov 2014
                                                    • 158
                                                    • Turkiye
                                                    #33
                                                    Re: intergrated tcon board ic rt6939 vestel polaroid p55up0277a

                                                    Originally posted by Diah
                                                    arizanotlari... the schematic you upload here are for ONE CHANNEL LVDS. as the set of OP. MFC SPI U13 not U14..
                                                    do you have recovery firmware of this set with 3 files???
                                                    i have MFC.bin used by vestel such 246009 & 240226 which used over most vestel.
                                                    if you check page 14 of document you can see 1&2 lvds options. U13 is Mboot SPI not MFC.
                                                    U14 is position code of MFC ic.

                                                    Vestel dont allow access to firmware of export products. I have full firmware of
                                                    QNDS2DN12 panel : https://yadi.sk/d/QyY2xVD8ghxQYw

                                                    all my respect.
                                                    https://www.badcaps.net

                                                      Comment

                                                      • jimbofz
                                                        Badcaps Veteran
                                                        • Apr 2013
                                                        • 539
                                                        • uk
                                                        #34
                                                        Re: intergrated tcon board ic rt6939 vestel polaroid p55up0277a

                                                        sorry been away from pc .
                                                        does the last post from arizanotlari contain the correct firmware for my tv?
                                                        if yes can i install this via usb ,
                                                        considering i have no on screen graphics to enter correct menu
                                                        my panel type:ves550qnds 2d u12
                                                        Last edited by jimbofz; 11-16-2020, 02:21 PM.

                                                          Comment

                                                          • Diah
                                                            Badcaps Legend
                                                            • Feb 2013
                                                            • 6397
                                                            • Germany
                                                            #35
                                                            Re: intergrated tcon board ic rt6939 vestel polaroid p55up0277a

                                                            Originally posted by jimbofz
                                                            sorry been away from pc .
                                                            does the last post from arizanotlari contain the correct firmware for my tv?
                                                            if yes can i install this via usb ,
                                                            considering i have no on screen graphics to enter correct menu
                                                            my panel type:ves550qnds 2d u12
                                                            are you sure this label related to Panel Type ? not BL strings Type?

                                                              Comment

                                                              • jimbofz
                                                                Badcaps Veteran
                                                                • Apr 2013
                                                                • 539
                                                                • uk
                                                                #36
                                                                Re: intergrated tcon board ic rt6939 vestel polaroid p55up0277a

                                                                this is the label from inside tv
                                                                Attached Files

                                                                  Comment

                                                                  • Diah
                                                                    Badcaps Legend
                                                                    • Feb 2013
                                                                    • 6397
                                                                    • Germany
                                                                    #37
                                                                    Re: intergrated tcon board ic rt6939 vestel polaroid p55up0277a

                                                                    Originally posted by jimbofz
                                                                    this is the label from inside tv
                                                                    okay.. i am little confused.. where are yours MFC SPI ?
                                                                    can you tell how many SPI you have on boards .. 8pins with label No had part on it 25L ?

                                                                      Comment

                                                                      • jimbofz
                                                                        Badcaps Veteran
                                                                        • Apr 2013
                                                                        • 539
                                                                        • uk
                                                                        #38
                                                                        Re: intergrated tcon board ic rt6939 vestel polaroid p55up0277a

                                                                        Originally posted by Diah
                                                                        okay.. i am little confused.. where are yours MFC SPI ?
                                                                        can you tell how many SPI you have on boards .. 8pins with label No had part on it 25L ?
                                                                        here are some pics of main board hope it helps thanks
                                                                        Attached Files

                                                                          Comment

                                                                          • Diah
                                                                            Badcaps Legend
                                                                            • Feb 2013
                                                                            • 6397
                                                                            • Germany
                                                                            #39
                                                                            Re: intergrated tcon board ic rt6939 vestel polaroid p55up0277a

                                                                            good work... so U11 yours MFC SPI.. do you have programmer CH341A ?

                                                                              Comment

                                                                              • jimbofz
                                                                                Badcaps Veteran
                                                                                • Apr 2013
                                                                                • 539
                                                                                • uk
                                                                                #40
                                                                                Re: intergrated tcon board ic rt6939 vestel polaroid p55up0277a

                                                                                Originally posted by Diah
                                                                                good work... so U11 yours MFC SPI.. do you have programmer CH341A ?
                                                                                sorry i do not have a CH341A ,
                                                                                should i put it on my Christmas list?

                                                                                  Comment

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