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Forum: Troubleshooting TVs and Video Sources 12-30-2019, 10:59 AM
Replies: 3
Views: 93
Posted By thuss
Re: Panasonic 55AS802b Mainboard replacement

Hi Sordids

shall I remove the thread?
Forum: Troubleshooting TVs and Video Sources 12-29-2019, 02:23 PM
Replies: 3
Views: 93
Posted By thuss
Panasonic 55AS802b Mainboard replacement

Hi

My Panasonic turns on but wont go past the Panasonic logo.

From what I have been told its a poorly designed main board that couldn't handle a firmware update.

Panasonic want a whopping...
Forum: Troubleshooting TVs and Video Sources 10-02-2019, 06:47 PM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

Thanks forall your help- finally replace the cap and the chip 200D6 and its all working now.

Many thanks to R_J and the others.
Forum: Troubleshooting TVs and Video Sources 08-23-2019, 08:05 PM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

Thanks You for the advice will keep you updated but still waiting on delivery of the ic200
Forum: Troubleshooting TVs and Video Sources 08-21-2019, 07:16 PM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

My mate cant tell if R212 goes to pin 6 for definite (100%) - its all burnt underneath the chip (Ic200) - If anybodys got a board laying about confirmation of pin6/pin5 to R212 would be really...
Forum: Troubleshooting TVs and Video Sources 08-17-2019, 01:25 PM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

Thank you will keep you update once ic200 is removed should be able to see where the track goes - to pin6 etc thanks again
Forum: Troubleshooting TVs and Video Sources 08-17-2019, 08:35 AM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

Will get some uploaded but it's a mess
Forum: Troubleshooting TVs and Video Sources 08-17-2019, 08:34 AM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

Yes I've seen that for example the diodes individually tested but in regards to the board in question we are trying to confirm the trace from r212 to pin 6 so stuck at the moment.

To be on the...
Forum: Troubleshooting TVs and Video Sources 08-16-2019, 09:04 PM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

Yes i am certain it's a 47k resistor, measures 47k and one of the bands looks like a purple / blue to me. Sorry ic203 part number is 8g416ne3 or it could be e78g416ne3 - I can't find this ic on the...
Forum: Troubleshooting TVs and Video Sources 08-16-2019, 08:38 PM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

Sorry I meant the Rhs source pin. The smd resistors were replaced by smd resistors with the same value r214 was replaced by a 100 code which is a 10 ohm and r209 was replaced with a 102 - 1000 ohm...
Forum: Troubleshooting TVs and Video Sources 08-16-2019, 07:14 PM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

Yes the ic has been changed 3 times most recent after the smd resistors where blown- r213 was still reading ohms a bit charred so it was replaced.
Q202 the 5n60 has been replaced several times. But...
Forum: Troubleshooting TVs and Video Sources 08-16-2019, 12:51 PM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

R212 looks like it should be connected to pin 6 but the track is damaged- I will get him to solder a wire from pin6 to the resistor, will look at octocouplers again.

Pin2 has 0 voltage ( ic200)
Forum: Troubleshooting TVs and Video Sources 08-16-2019, 11:37 AM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

He checked ysus pins to chassis again his meter is reading OL (600 ohm range) on every pin apart from ground (0.4)
Forum: Troubleshooting TVs and Video Sources 08-16-2019, 09:53 AM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

Yes definitely in ohms beep mode (600 ohm range) all the voltages are there apart from 18v my mate double treble checked he was in continuity mode.

One thing he did note was that ic200 may have...
Forum: Troubleshooting TVs and Video Sources 08-16-2019, 01:05 AM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

d205 reads 2.1 v both sides. r213 (47k?) reads 205v one side and 9v the other. The diodes on the other side d207 d206 d208 read 2.1 v both sides .d557 read 205v both sides. The first thing I did was...
Forum: Troubleshooting TVs and Video Sources 08-15-2019, 10:38 PM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

Yes only 3.8v with the new q202 and ic201. All the smd resistors r209 etc are fine . R217 was replaced with a slightly smaller sized resistor bands brown black golf gold.
Forum: Troubleshooting TVs and Video Sources 08-15-2019, 10:05 PM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

D203 reads OK as a diode On one side there was 3.8v on on it but on the transformer leg side of d203 there was 0volts. Ic201 - part number is as7818a. I think this board maybe beyond our repair. On...
Forum: Troubleshooting TVs and Video Sources 08-14-2019, 07:29 PM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

R209, R217,R212,Q202 and the ic as you said all blew after I replaced Q202.

I replaced the above and still no picture but thankfull no sizzle and bang this time. I will check what you have written...
Forum: Troubleshooting TVs and Video Sources 08-13-2019, 09:17 PM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

I measured 10v on R209, But you are right R217 is open now thanks (I was still assuming it read 2ohm)

Honestly thanks for all your help R_J I will keep you updated my mate hasn't got the resistors...
Forum: Troubleshooting TVs and Video Sources 08-13-2019, 08:58 PM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

So tomorrow basically replace the ic,R217,R214 and R209? I will change R214 and see if 5n60 shorts may save replacing the ic again

One thing I did forget to mention R217 discoloured yesterday...
Forum: Troubleshooting TVs and Video Sources 08-13-2019, 08:47 PM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

R214 isnt reading anything -struggling to find R217 sorry found 217 a bit discoloured but still reading 2ohm
Forum: Troubleshooting TVs and Video Sources 08-13-2019, 08:42 PM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

just searching through some old boards
Forum: Troubleshooting TVs and Video Sources 08-13-2019, 08:37 PM
Replies: 62
Views: 1,417
Posted By thuss
Forum: Troubleshooting TVs and Video Sources 08-13-2019, 08:32 PM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

My mates has just right now changed Q202 and we are getting 205v (Drain)centre pin and 1.8 volts on the (source) rhs pin.

But still only getting 4 volts on the 18 rail
Forum: Troubleshooting TVs and Video Sources 08-13-2019, 08:00 PM
Replies: 62
Views: 1,417
Posted By thuss
Re: 60pb660v flogging a dead tv-shop visit req

Yes we did check q202 it seemed fine, on diode test. When you mean the source resistor are you talking about R214? I will replace the q202 and R214 and check for other failed components. R331 R330...
Showing results 1 to 25 of 207

 
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