i can not fix a plasma i need some help....

[mattstolte]

Is there anybody that can work work. with me on fixing plasmas? I have been tvs now for about 6 months. Buying broken ones and fixing them and selling them. I'm ok with lcds but I have yet to fix a plasma. I need some serious guidance. Anyone willing to work with me? I have like 2 I need to troubleshoot.. if so please pm me. I need to learn this

[tom66]

Re: i can not fix a plasma i need some help....

The Panasonic and Hitachi?

tw2005 was working through you on the Panasonic? -- suggest you continue that thread.

Hitachi plasmas are nightmares to debug - they will shut down without an error code. I have never fixed a true Hitachi plasma before. (Only an LG re-badge one.) I had one randomly go into lock out after pulling connectors. Could not get it to go back out. Apparently needs a new control board, would you believe it, crazy. So...... uh, good luck? Sorry not much help.

Plasmas aren't that hard to debug, but you do need good gear. Generally I'm finding plasmas easier to repair although I admit the learning threshold is steeper this is more due to lack of content regarding them. Also, I highly suggest an oscilloscope for testing the sustain boards. Before I got my scope I was always taking stabs in the dark wrt to fixing them.

[mattstolte]

Re: i can not fix a plasma i need some help....

The Panasonic and Hitachi?

tw2005 was working through you on the Panasonic? -- suggest you continue that thread.

Hitachi plasmas are nightmares to debug - they will shut down without an error code. I have never fixed a true Hitachi plasma before. (Only an LG re-badge one.) I had one randomly go into lock out after pulling connectors. Could not get it to go back out. Apparently needs a new control board, would you believe it, crazy. So...... uh, good luck? Sorry not much help.

Plasmas aren't that hard to debug, but you do need good gear. Generally I'm finding plasmas easier to repair although I admit the learning threshold is steeper this is more due to lack of content regarding them. Also, I highly suggest an oscilloscope for testing the sustain boards. Before I got my scope I was always taking stabs in the dark wrt to fixing them.

Tom, no I don't have a panasonic plasma.. that one ain't me.. I do have the hitachi, and now have a hp... the hitachi used to power from standby to power. Then I started unplugging buffer boards to try to find problem. And now it won't even go any farther then standby... the hp I found a blown fuse on y sus. Then I replaced that and now don't know where to begin.??

[tom66]

Re: i can not fix a plasma i need some help....

The HP is an LG panel?

[mattstolte]

Re: i can not fix a plasma i need some help....

The HP is an LG panel?

tom yes hp is lg panel

[tom66]

Re: i can not fix a plasma i need some help....

Check your Vs/Va in the current state, then.

[mattstolte]

Re: i can not fix a plasma i need some help....

Check your Vs/Va in the current state, then.

Tom so ur saying check the vs and va voltages coming off the power supply correct? And what should it read?

[tom66]

Re: i can not fix a plasma i need some help....

Yes - It should match what is written on the Panel Sticker. Have you read my thread on plasma troubleshooting?

[mattstolte]

Re: i can not fix a plasma i need some help....

Yes - It should match what is written on the Panel Sticker. Have you read my thread on plasma troubleshooting?

Tom i. Did find a blown fuse on the ysus

[tom66]

Re: i can not fix a plasma i need some help....

Yes, the point is now to methodically break down the problem and figure out if you have faults beyond that fuse. So check Vs/Va match the sticker first.

[mattstolte]

Re: i can not fix a plasma i need some help....

Yes, the point is now to methodically break down the problem and figure out if you have faults beyond that fuse. So check Vs/Va match the sticker first.

tom I checked the vs/va coming off the power supply, and im not getting any voltages?

[tom66]

Re: i can not fix a plasma i need some help....

OK, so why might that be? You'd probably immediately say - "bad power board"? But it's more likely related to that fuse that blew. Fuses usually blow for a reason. Perhaps, try removing that fuse temporarily and powering it up, then see if Vs/Va rise.

[mattstolte]

Re: i can not fix a plasma i need some help....

OK, so why might that be? You'd probably immediately say - "bad power board"? But it's more likely related to that fuse that blew. Fuses usually blow for a reason. Perhaps, try removing that fuse temporarily and powering it up, then see if Vs/Va rise.

Tom I will do that in a few mins when I get back there. And thanks for working with me on this. And I know were doing the hp, but the hitachi don't have vs or va either

[mattstolte]

Re: i can not fix a plasma i need some help....

Ok tom,i took out that fuse, and still nothing changed

[tom66]

Re: i can not fix a plasma i need some help....

No Vs/Va? Where are you checking for it?
Absolutely no clue on the Hitachi, I stay away from those for a reason, wouldn't touch one unless it were free.

[mattstolte]

Re: i can not fix a plasma i need some help....

[QUOTE=tom66;437136]No Vs/Va? Where are you checking for it?
Absolutely no clue on the Hitachi, I stay away from those for a reason, wouldn't touch one unless it were free.[/QUOTE

ok tom here we go. I wasn't getting any voltages cause I didn't turn it on, turned the tv on without fuse vs 183v, va 58v.. so that's pretty close to what there suppose to be. 186 and 60. so then I put the fuse in and try to turn it on, it turn on for about 2-3 sec then turns off,,,, no picture or nothing when I say turns on,,, just like with one fuse it turns on but no picture, so its gotta be the y sus or what?

[tom66]

Re: i can not fix a plasma i need some help....

You will probably find a short on the Y-sus. But, if the Z-sus chains from it, make sure to isolate that, too.

[mattstolte]

Re: i can not fix a plasma i need some help....

You will probably find a short on the Y-sus. But, if the Z-sus chains from it, make sure to isolate that, too.

Tom so please explain to me in detail how to isolate them and check?

[tom66]

Re: i can not fix a plasma i need some help....

Check if the Z-sustain power cable comes off the Y-sustain. If it does, remove it for the time being.

[mattstolte]

Re: i can not fix a plasma i need some help....

Check if the Z-sustain power cable comes off the Y-sustain. If it does, remove it for the time being.

Tom. The y sus and zus are not tied together.. they both come off the power supply separetly. And also if this matters I disconnected the bottom scan buffer that's connected to the ysus and tv stilll would power on. Then I connected the bottom scan drive that's connected to the zsus and tv wouldn't turn on