Fujitsu PDS4208 42" Plasma Help - Page 3 - Electronic Circuits Projects Diagrams Free

sino · 8th March 2009, 05:44 PM

Hi,

I have a Fujitsu PDS4229W-B plasma. The red light blinks continuously. I got a service manual from eBay. After following the trouble shooting flowchart, it is found that the PDP has to be replaced. Just wonder if there are some components on the PDP boards burnt which cause the power supply protector operated.

I've reset Vs, -Vy, Vsc, Va & Vw but this doesn't help. Thanks in advance.

Sino

**Nigel Goodwin** · 8th March 2009, 11:52 PM

In my experience Fujitsu are absolutely useless, not only can they not supply any spares, they can't even supply you a price on them.

Certainly the most common fault on Plasma's is the PDP failing, so it's quite likely that's the case - which means it's not worth doing.

sino · 9th March 2009, 02:31 AM

Thank you for your reply. Fujitsu's practice is as poor as that of Samsung here in Hong Kong. I checked a washing machine with my aunt and found that the water inlet valve fails. Samsung insists on-site inspection before giving any quotation, i.e. charges us first, of course I can't get any parts from them. I've decided not to buy any more products from Samsung.

Back to the plasma, Justin77 suggested that the problem might be due to NA18100-300901/NA18100-300911 failure. As I do not have the schematics, it's worth a try provided that these components are cheap.

**Nigel Goodwin** · 9th March 2009, 10:26 AM

Quote:

Originally Posted by sino

Thank you for your reply. Fujitsu's practice is as poor as that of Samsung here in Hong Kong. I checked a washing machine with my aunt and found that the water inlet valve fails. Samsung insists on-site inspection before giving any quotation, i.e. charges us first, of course I can't get any parts from them. I've decided not to buy any more products from Samsung.

Back to the plasma, Justin77 suggested that the problem might be due to NA18100-300901/NA18100-300911 failure. As I do not have the schematics, it's worth a try provided that these components are cheap.

Fujitsu's 'service' consists of simply panel changing, so they don't provide schematics or individual spares.

yardie · 24th March 2009, 01:35 AM

Sony PFM500A2
Powers on - standby - red light
Comes out of standby green light
Relay clicks
Fans spin
Panel flashes on briefly with a buzz then extinguishes
Goes into standy with error code 12 - 22
The whole process automatically starts again.
Any help would be greatly appreciated.
Voltage readings
VS - 179.6
VA - 65
VE - 13
VCC - 5
VW - 170
-VY - 164
VRS - 1.49
VRA - 1.96
VRR - 2.98

The buzzing appears to be coming from part listed as NA18100-300911 - a large black heatsink - there are 4 of these in total, 2 on each side of the rear panel but only this one is buzzing.

I am not completely convinced that this part is at fault but perhaps more that there is insufficient power somewhere but need confirmation of the above voltages.
Many people state 12 - 22 is a Panel or power fault but this is as far as anyone seems to be prepared to say, or know.
Any further assistance in determining if this is in fact dead or otherwise would help tremendously, thank-you.

**Nigel Goodwin** · 24th March 2009, 10:46 AM

I have access to Sony Assist, but there's no manual on there - only a fault finding guide (which is a protected PDF), and that doesn't seem to mention any fault codes.

yardie · 24th March 2009, 10:54 AM

Hi Nigel
Thanks, I am almost certain it is a power related issue, if anyone can assist further I would be grateful.
junkyardfrenzy@yahoo.co.uk
Regards
Rob

johnb1111 · 22nd August 2009, 03:27 AM

I have recently fixed my Fujitsu P42HHA10AS 42" plasma which had a similar problem.
Would run ok for periods, (sometimes 30 mins, sometimes 2+ hours), picture perfect. Then it would randomly fail - with loss of picture, then shutdown. Front panel led indicator goes from green (normal) to flashing red continuous.
After switch off, removal and re-application of power it would often re-start and run normally for a while.
Sometimes it needed to be allowed overnight to cool before it would run again.
I also noticed that the failures generally coincided with any change to the screen display mode or input mode settings.

Fujitsu service supplied service manual and Service Bulletins regarding this problem :-
Service Manual P42HHA10 is available at
fujitsu P42HHA10W Service Manual free download,schematics,datasheets,eeprom bins,pcb,repair info for test equipment and electronics

Service Bulletin PDP 0040-01 Main Digital pcb see Fujitsu 42 inch Plasma Service Manual free download,schematics,datasheets,eeprom bins,pcb,repair info for test equipment and electronics

Service Bulletin PDP 0068-01 Main Digital pcb see Fujitsu 42 inch Plasma Service Manual free download,schematics,datasheets,eeprom bins,pcb,repair info for test equipment and electronics

Service Bulletin PDP 0035-06 Main Power pcb see Fujitsu 42 inch Plasma Service Manual free download,schematics,datasheets,eeprom bins,pcb,repair info for test equipment and electronics

Worked through the service manual checks (service manual very basic- overview / DC voltages only - assumes availability of replacement modules). The troubleshooting flow charts lead you nowhere helpful.
Could find no fault with the power board, except that the 6.5V(nominal) was actually 7.4V at CN351 Pin12.
Added 2x Schottky diodes (1Watt) in series with the transformer 6.5V output winding - this lowered the output voltage to 6.6V. - However, this made no difference to the continuing fault condition.

This units problem was fixed on implementation of Service Bulletin PDP 0068-01 Main Digital pcb.
No other faulty components were found.

The mounting solder on the main processor socket was cracked on one corner at the pcb mount point. (See last picture in PDP 0068-01, page 2)
Re-soldered same, and the set has worked faultlessly since.
I became convinced over time that the fault was to do with the main processor board, as the failures were so random, and the set would otherwise run perfectly.
This fault is caused by a combination of solder fatigue, vibration and the thermal cycling of the pcb over time.
I expect it is a cause of many of the reported problems experienced on these Fujitsu plasma displays.

I expect the PDS4229 model would share similar modules to the P42HHA.

Note.. The above work should only be attempted by suitably skilled person/s, as very fine soldering and knowledge of electronic pcb repair techniques are required.

sheldonstv · 28th August 2009, 01:19 AM

here is what i have servicemanual wise for this model set if it is of any use for you-but do not attempt repair unless you know what you are doing with this sort of set as mistakes will be very expensive board wise.....

johnb1111 · 20th September 2009, 07:27 AM

Thanks for your reply.
My P42HHA10AS plasma has been working fine for a couple weeks now, so I'm confident it's fixed.
One would not think a solder crack on the side of the processor mounting socket would cause the processor to become unstable - but it apparently did.

Evident symptoms resulting from an unstable processor are potentially many and varied, so I think if a Fujitsu plasma suffers from a recurring unexplained random fault condition or shutdown etc, first check should be the main digital board processor socket solder.

Regards,
JohnB

20/09/2009.
The P42HHA10AS 42" plasma repaired above again failed.
Symptoms this time were intermittent grid lines across picture (followed shortly after by complete loss of picture), including loss of any on screen display indications. Audio continued to work OK.
Green 'power on' indicator operated as per normal - no red alarm indicator.

Fault was again traced to fatigued solder joints on the main processor 48 pin socket.
The failed/fatigued solder joints were on the 3 to 4 pins adjacent to the socket mount fillets that had previously cracked.
(A couple of the pins could be observed to move at the pcb solder pad if prodded with the end of a pin- confirming broken solder joints).
It would appear, that when the socket mount fillet solder cracks it places extra stress on the adjacent soldered socket connection pins causing them to also fail.
Resolder the pins by flooding pins with solder using fine tipped solder iron - remove excess solder (and solder bridges) with soderwick braid - clean up and inspect under strong magnifier for inter-pin shorts. Take extreme care not to damage IC socket - if damaged the whole board is junk!
This is very fine work, & should only be attempted by suitably skilled persons experienced in electronic repairs.

Conclusion:-
When checking condition of main processor socket as per Service Bulletin PDP 0068-01, also carefully check condition of solder joints on socket pcb connection pins.

Note.. Main processor board can be removed by:-
1) remove main rear cover panel,
2) remove lower rear cover panel - to get this panel off, hex screws adjacent to the RS232, RGB1, RGB2, and other screws mounting audio and video sockets need to be removed, disconnect AC pwr input socket.
3) slide out RS232/RGB module,
4) disconnect & remove video3 component video sub-board,
5) remove main processor board electrostatic shield coverpanel- disconnection of some plug/sockets reqd,
6) remove screws mounting main processor board, unplug from mother sub-board & remove.
Re- assembly is reverse of above.

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8th March 2009, 05:44 PM	#31
sino	Hi, I have a Fujitsu PDS4229W-B plasma. The red light blinks continuously. I got a service manual from eBay. After following the trouble shooting flowchart, it is found that the PDP has to be replaced. Just wonder if there are some components on the PDP boards burnt which cause the power supply protector operated. I've reset Vs, -Vy, Vsc, Va & Vw but this doesn't help. Thanks in advance. Sino

8th March 2009, 11:52 PM	#32
Nigel Goodwin	In my experience Fujitsu are absolutely useless, not only can they not supply any spares, they can't even supply you a price on them. Certainly the most common fault on Plasma's is the PDP failing, so it's quite likely that's the case - which means it's not worth doing. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

9th March 2009, 02:31 AM	#33
sino	Thank you for your reply. Fujitsu's practice is as poor as that of Samsung here in Hong Kong. I checked a washing machine with my aunt and found that the water inlet valve fails. Samsung insists on-site inspection before giving any quotation, i.e. charges us first, of course I can't get any parts from them. I've decided not to buy any more products from Samsung. Back to the plasma, Justin77 suggested that the problem might be due to NA18100-300901/NA18100-300911 failure. As I do not have the schematics, it's worth a try provided that these components are cheap.

24th March 2009, 01:35 AM	#35
yardie	Sony plasma with Fujitsu panel Sony PFM500A2 Powers on - standby - red light Comes out of standby green light Relay clicks Fans spin Panel flashes on briefly with a buzz then extinguishes Goes into standy with error code 12 - 22 The whole process automatically starts again. Any help would be greatly appreciated. Voltage readings VS - 179.6 VA - 65 VE - 13 VCC - 5 VW - 170 -VY - 164 VRS - 1.49 VRA - 1.96 VRR - 2.98 The buzzing appears to be coming from part listed as NA18100-300911 - a large black heatsink - there are 4 of these in total, 2 on each side of the rear panel but only this one is buzzing. I am not completely convinced that this part is at fault but perhaps more that there is insufficient power somewhere but need confirmation of the above voltages. Many people state 12 - 22 is a Panel or power fault but this is as far as anyone seems to be prepared to say, or know. Any further assistance in determining if this is in fact dead or otherwise would help tremendously, thank-you.

24th March 2009, 10:46 AM	#36
Nigel Goodwin	I have access to Sony Assist, but there's no manual on there - only a fault finding guide (which is a protected PDF), and that doesn't seem to mention any fault codes. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

24th March 2009, 10:54 AM	#37
yardie	Re: Sony plasma with Fujitsu panel Hi Nigel Thanks, I am almost certain it is a power related issue, if anyone can assist further I would be grateful. junkyardfrenzy@yahoo.co.uk Regards Rob

22nd August 2009, 03:27 AM	#38
johnb1111	I have recently fixed my Fujitsu P42HHA10AS 42" plasma which had a similar problem. Would run ok for periods, (sometimes 30 mins, sometimes 2+ hours), picture perfect. Then it would randomly fail - with loss of picture, then shutdown. Front panel led indicator goes from green (normal) to flashing red continuous. After switch off, removal and re-application of power it would often re-start and run normally for a while. Sometimes it needed to be allowed overnight to cool before it would run again. I also noticed that the failures generally coincided with any change to the screen display mode or input mode settings. Fujitsu service supplied service manual and Service Bulletins regarding this problem :- Service Manual P42HHA10 is available at fujitsu P42HHA10W Service Manual free download,schematics,datasheets,eeprom bins,pcb,repair info for test equipment and electronics Service Bulletin PDP 0040-01 Main Digital pcb see Fujitsu 42 inch Plasma Service Manual free download,schematics,datasheets,eeprom bins,pcb,repair info for test equipment and electronics Service Bulletin PDP 0068-01 Main Digital pcb see Fujitsu 42 inch Plasma Service Manual free download,schematics,datasheets,eeprom bins,pcb,repair info for test equipment and electronics Service Bulletin PDP 0035-06 Main Power pcb see Fujitsu 42 inch Plasma Service Manual free download,schematics,datasheets,eeprom bins,pcb,repair info for test equipment and electronics Worked through the service manual checks (service manual very basic- overview / DC voltages only - assumes availability of replacement modules). The troubleshooting flow charts lead you nowhere helpful. Could find no fault with the power board, except that the 6.5V(nominal) was actually 7.4V at CN351 Pin12. Added 2x Schottky diodes (1Watt) in series with the transformer 6.5V output winding - this lowered the output voltage to 6.6V. - However, this made no difference to the continuing fault condition. This units problem was fixed on implementation of Service Bulletin PDP 0068-01 Main Digital pcb. No other faulty components were found. The mounting solder on the main processor socket was cracked on one corner at the pcb mount point. (See last picture in PDP 0068-01, page 2) Re-soldered same, and the set has worked faultlessly since. I became convinced over time that the fault was to do with the main processor board, as the failures were so random, and the set would otherwise run perfectly. This fault is caused by a combination of solder fatigue, vibration and the thermal cycling of the pcb over time. I expect it is a cause of many of the reported problems experienced on these Fujitsu plasma displays. I expect the PDS4229 model would share similar modules to the P42HHA. Note.. The above work should only be attempted by suitably skilled person/s, as very fine soldering and knowledge of electronic pcb repair techniques are required.

20th September 2009, 07:27 AM	#40
johnb1111	Fujitsu Plasma P42HHA10AS repair Thanks for your reply. My P42HHA10AS plasma has been working fine for a couple weeks now, so I'm confident it's fixed. One would not think a solder crack on the side of the processor mounting socket would cause the processor to become unstable - but it apparently did. Evident symptoms resulting from an unstable processor are potentially many and varied, so I think if a Fujitsu plasma suffers from a recurring unexplained random fault condition or shutdown etc, first check should be the main digital board processor socket solder. Regards, JohnB 20/09/2009. The P42HHA10AS 42" plasma repaired above again failed. Symptoms this time were intermittent grid lines across picture (followed shortly after by complete loss of picture), including loss of any on screen display indications. Audio continued to work OK. Green 'power on' indicator operated as per normal - no red alarm indicator. Fault was again traced to fatigued solder joints on the main processor 48 pin socket. The failed/fatigued solder joints were on the 3 to 4 pins adjacent to the socket mount fillets that had previously cracked. (A couple of the pins could be observed to move at the pcb solder pad if prodded with the end of a pin- confirming broken solder joints). It would appear, that when the socket mount fillet solder cracks it places extra stress on the adjacent soldered socket connection pins causing them to also fail. Resolder the pins by flooding pins with solder using fine tipped solder iron - remove excess solder (and solder bridges) with soderwick braid - clean up and inspect under strong magnifier for inter-pin shorts. Take extreme care not to damage IC socket - if damaged the whole board is junk! This is very fine work, & should only be attempted by suitably skilled persons experienced in electronic repairs. Conclusion:- When checking condition of main processor socket as per Service Bulletin PDP 0068-01, also carefully check condition of solder joints on socket pcb connection pins. Note.. Main processor board can be removed by:- 1) remove main rear cover panel, 2) remove lower rear cover panel - to get this panel off, hex screws adjacent to the RS232, RGB1, RGB2, and other screws mounting audio and video sockets need to be removed, disconnect AC pwr input socket. 3) slide out RS232/RGB module, 4) disconnect & remove video3 component video sub-board, 5) remove main processor board electrostatic shield coverpanel- disconnection of some plug/sockets reqd, 6) remove screws mounting main processor board, unplug from mother sub-board & remove. Re- assembly is reverse of above.