Philips 50PF9431D/37 Chassis BJ2-5UPA

[PlainBill]

Re: Philips 50PF9431D/37 Chassis BJ2-5UPA

Welcome!!

Mainboard replacement or find another mainboard from junker board that uses same board (only difference is different panel used and is reset to different panel by remote control (punching in option number followed by 6 digits). Back to this, copy this eeprom contents and flash onto the corrupt eeprom. No fun.

That doofus should WAIT for it to finish.

Cheers, Wizard

Thanks for the info. Makes me glad I didn't buy it.

PlainBill

[Eldo1971]

Re: Philips 50PF9431D/37 Chassis BJ2-5UPA

hello, i have this power supply too LJ44-00125A and have 6 long and 3 short red led flash. its a error codes!

can pls anyone help how i can fiy my problem?

[PlainBill]

Re: Philips 50PF9431D/37 Chassis BJ2-5UPA

hello, i have this power supply too LJ44-00125A and have 6 long and 3 short red led flash. its a error codes!

can pls anyone help how i can fiy my problem?

Thts a prblm tht pwr sply ws usd on mny tv. wht mdl yrs?

PlainBill

[Eldo1971]

Re: Philips 50PF9431D/37 Chassis BJ2-5UPA

wow, so fast answer here My TV is Philips 50PF9631D/10 THANKS from Germany

[PlainBill]

Re: Philips 50PF9431D/37 Chassis BJ2-5UPA

wow, so fast answer here My TV is Philips 50PF9631D/10 THANKS from Germany

That error code is not a legitimate flash code according to the service manual for the North American version of that TV. One major difference between the North American version (NTSC /ATSC) and the European version (PAL?) would be in the Small Signal Board (SSB). The error code is generated by the processors on the SSB.

Many service manuals are listed by chassis number, not model number. This site has cross references that will convert model number to chassis number. And Elektrotanya has an excellent collection of Service Manuals.

The only time I saw error 63 flashing it was on the 42" version of this chassis, which has a different power supply. In that case, there were two 3300uF, 10 volt caps bulging. Replacing them solved the problem.

PlainBill

[Eldo1971]

Re: Philips 50PF9431D/37 Chassis BJ2-5UPA

ohh yes, its BJ3.0E PA chassis, but im wondering that power supply look other then this service manual from BJ3.0E PA !?!? i have LJ44-000125A on my TV! That with this 2 capacitors 3300uF have i many read on internet this bad caps but i dont have this 2 capacitors on my power supply((

On my power supply voltage are okay: 3,3V, 5V, 5,2V 8,6V 12V and what im wondering is that i can measure 65V on VA voltage but if the VA switsh on must i have no VS and VE voltage too? i can just measure by VS 2,4V that is my problem i thing!?!?

Smal SSB i can measure 12V and 3,3V by DC-DC supply i think 1,2V too but im not sure coz i dont know really where i can there measure.

Wo gives the start for power up? I can read on one connecter from CTRL board to SSB that is one pin VS start or so?!? is maybe my CTRL board faulty?!? But its green led flash and my Power Supply and SSB too green flashed.

i hope you can understand my english coz im really bad in english

[PlainBill]

Re: Philips 50PF9431D/37 Chassis BJ2-5UPA

ohh yes, its BJ3.0E PA chassis, but im wondering that power supply look other then this service manual from BJ3.0E PA !?!? i have LJ44-000125A on my TV! That with this 2 capacitors 3300uF have i many read on internet this bad caps but i dont have this 2 capacitors on my power supply((

On my power supply voltage are okay: 3,3V, 5V, 5,2V 8,6V 12V and what im wondering is that i can measure 65V on VA voltage but if the VA switsh on must i have no VS and VE voltage too? i can just measure by VS 2,4V that is my problem i thing!?!?

Smal SSB i can measure 12V and 3,3V by DC-DC supply i think 1,2V too but im not sure coz i dont know really where i can there measure.

Wo gives the start for power up? I can read on one connecter from CTRL board to SSB that is one pin VS start or so?!? is maybe my CTRL board faulty?!? But its green led flash and my Power Supply and SSB too green flashed.

i hope you can understand my english coz im really bad in english

Your English is better than my German. About the only phrases I know are 'Nicht ausspucken' and 'Guten Tag'.

I gather that some of the power supply output voltages are missing. This could be due to a defective power supply or to a defective Y-Sustain or Z-Sustain board.

The usual test:

1. Disconnect the TV from the mains power.
2. Wait 5 minutes.
3. Disconnect the cable from the power supply to the Z-Sustain card (right side as views from the back).
4. Reconnect the TV to the power mains, turn on the TV, and check if the missing voltages are present. If they are, the Z-Sustain is defective.
5. If the TV still turns off, and the voltage are not present, unplug the TV from the mains power.
6. Wait 5 minutes.
7. Reconnect the power cable to the Z-Sustain and disconnect the cable from the power supply to the Y-Sustain (left side as viewed from back)
8. Reconnect the TV to the power mains, turn on the TV, and check if the missing voltages are present. If they are, the Y-Sustain is defective.
9. If the voltages were missing in both cases, replace the power supply.

PlainBill

[Eldo1971]

Re: Philips 50PF9431D/37 Chassis BJ2-5UPA

Your English is better than my German. About the only phrases I know are 'Nicht ausspucken' and 'Guten Tag'.

I gather that some of the power supply output voltages are missing. This could be due to a defective power supply or to a defective Y-Sustain or Z-Sustain board.

The usual test:

1. Disconnect the TV from the mains power.
2. Wait 5 minutes.
3. Disconnect the cable from the power supply to the Z-Sustain card (right side as views from the back).
4. Reconnect the TV to the power mains, turn on the TV, and check if the missing voltages are present. If they are, the Z-Sustain is defective.
5. If the TV still turns off, and the voltage are not present, unplug the TV from the mains power.
6. Wait 5 minutes.
7. Reconnect the power cable to the Z-Sustain and disconnect the cable from the power supply to the Y-Sustain (left side as viewed from back)
8. Reconnect the TV to the power mains, turn on the TV, and check if the missing voltages are present. If they are, the Y-Sustain is defective.
9. If the voltages were missing in both cases, replace the power supply.

PlainBill

Haha, "nicht ausspucken" why you know this word in german, give there a storry?

Thanks Bill, i did try that Z-Sus and Y-Sus in one time disconnect. I will try tomorow to disconnect each time of this 2 Boards.

Bill have UK PAL too? Coz i was replace this SSB Digital Board and buy one from UK! I cant switsh it on with my remote control, maybe UK have other IR-Codecs!?!?

[PlainBill]

Re: Philips 50PF9431D/37 Chassis BJ2-5UPA

Haha, "nicht ausspucken" why you know this word in german, give there a storry?

Simple explanation. In 1961 my family was very poor. No TV, much competition to listen to radio, so I read a lot. It was 5 miles to nearest library, so I read everything I could find at home. My older brother enlisted in the US Army and was stationed in Germany for two years. The Army gave him a pamphlet explaining how to behave when he was in Germany. I even read that, and 50 years later still remember the phrase. Of course, my accent is horrible.

Thanks Bill, i did try that Z-Sus and Y-Sus in one time disconnect. I will try tomorow to disconnect each time of this 2 Boards.

Bill have UK PAL too? Coz i was replace this SSB Digital Board and buy one from UK! I cant switsh it on with my remote control, maybe UK have other IR-Codecs!?!?

I have no idea what differences are between TV sets for different European countries.

PlainBill

[Eldo1971]

Re: Philips 50PF9431D/37 Chassis BJ2-5UPA

Simple explanation. In 1961 my family was very poor. No TV, much competition to listen to radio, so I read a lot. It was 5 miles to nearest library, so I read everything I could find at home. My older brother enlisted in the US Army and was stationed in Germany for two years. The Army gave him a pamphlet explaining how to behave when he was in Germany. I even read that, and 50 years later still remember the phrase. Of course, my accent is horrible.

I have no idea what differences are between TV sets for different European countries.

PlainBill

ahh okay, i understand. Today, unfortunately, it looks different! watching too much TV, and computer for small children!

VS Voltage is still missing(( i have measured all capacitor with ESR meter all low ESR 00,6-00,8 Ohm just 3 capacitor with about one 1 ohm but i think that is normal coz that is 33uF 450V capacitor with high voltage. i have search a datasheet for this capacitor and found someone but there is not listet the ESR!

i can read on one connecter from CTRL Board to Power Board "VS ON" how that operating? who gives that signal Ctrl to Power board or Power Board to CTRL its sey im ON and have the VS Signal or is that for turn VS ON from CTRL Board. i can nothing measure there on this pin.

[PlainBill]

Re: Philips 50PF9431D/37 Chassis BJ2-5UPA

I'm updating this thread so it will be easier to follow the trail of research.

The TV in this thread used the BJ2-4U PA / BJ2-5U PA chassis. The service manual is available here. The same circuit was used on the Small Signal board on many Philips chassis.

The diagnosis is discussed in section 5.8.6 beginning on page EN 37; see note 1 at the top of the second column on page EN 38.

The circuit is in the upper left corner of the schematic on page 52.

Layout of the board is on pages 95 and 98

The parts are on top of page 164 of the parts list. Note that 7U01 and 7U03 do not match the schematic; the parts list specifies upgraded parts.

All parts are available from DigiKey.

PlainBill

[ljintexas]

Re: Philips 50PF9431D/37 Chassis BJ2-5UPA

Interesting. That TV is the deluxe version of the one I am working on. The power supply in this one is an LJ44-00125A. Do you have the LJ44-00118A?

PlainBill

Indeed, I have an LJ44-00118A that has been rebuilt if there is a need.