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Search: Posts Made By: videobruce
Forum: Troubleshooting Audio Equipment 01-24-2016, 07:22 AM
Replies: 20
Views: 2,851
Posted By videobruce
Yamaha RX-V*7* series protection circuits

Yamaha RX-V series (specifically the 675) won't power up.
This isn't a bad caps problem, but appears to be their overly aggressive protection circuit problem.

I got it uses, initially it did...
Forum: Troubleshooting TVs and Video Sources 10-10-2014, 09:50 AM
Replies: 4
Views: 946
Posted By videobruce
Re: Plasma capacitor discharge time after removing power cord

Ok, thanks.
In the past I have seen some guys just short out the pins which I never did and didn't think it was the greatest idea.
Your take?
Forum: Troubleshooting TVs and Video Sources 10-10-2014, 07:17 AM
Replies: 4
Views: 946
Posted By videobruce
Plasma capacitor discharge time after removing power cord

About how long after power being removed and all cables disconnected from the SMPS board on a Plasma set is it safe to remove that PS to test? Too be sure, what points can be checked for stray...
Forum: Troubleshooting TVs and Video Sources 10-04-2014, 12:59 PM
Replies: 7
Views: 1,591
Posted By videobruce
Re: Testing a Plasma PS without any boards connected?

When plugged in, the standby light flashes twice and then dies. Nothing is coming off the PS as far as I can tell. No relay clicking.

It's a LG 60PK250. The supply looks clean, no burns, cold...
Forum: Troubleshooting TVs and Video Sources 10-03-2014, 04:12 PM
Replies: 7
Views: 1,591
Posted By videobruce
Re: Testing a Plasma PS without any boards connected?

I happened to stumble across a "training manual" for a similar series set and there are two pages on testing under load that are written differently. The 1st says nothing about disconnecting it from...
Forum: Troubleshooting TVs and Video Sources 10-03-2014, 10:38 AM
Replies: 7
Views: 1,591
Posted By videobruce
Re: Testing a Plasma PS without any boards connected?

LG 60PK250/550 from 2010
Using a load, is that with all the boards connected or disconnected?
Forum: Troubleshooting TVs and Video Sources 10-03-2014, 09:15 AM
Replies: 7
Views: 1,591
Posted By videobruce
Testing a Plasma PS without any boards connected?

To trouble shoot what appears to be a bad Plasma PS, disconnecting all of the daughter boards, where should a load go and how much to have the supply up and running to check voltages?
Forum: General Electronics Technical Discussion 10-03-2014, 08:19 AM
Replies: 8
Views: 3,058
Posted By videobruce
Re: Philips 52" LCDTV 5000 series question

Polaroid was only a name someone bought rights to. Good luck finding out whatever/whomever actually manufactured those POS's. :jester:
Forum: Troubleshooting TVs and Video Sources 10-03-2014, 07:58 AM
Replies: 2
Views: 1,612
Posted By videobruce
Re: LG 60PK250/550 series Plasma; no standby

Would heating up (or freezing) any of the components help find the problem? I see that mentioned a number of times. Any component temperature issues were always running hot, not cold from my...
Forum: Troubleshooting TVs and Video Sources 10-02-2014, 07:54 PM
Replies: 49
Views: 146,246
Posted By videobruce
Re: TV Repair Reference Library

Ten and more years ago, I don't remember not having full schematic and a parts list with almost any SM I bought. Now you don't seem to get either.
Forum: Troubleshooting TVs and Video Sources 10-02-2014, 07:19 PM
Replies: 4
Views: 796
Posted By videobruce
Re: Vizio 42 Tuner - Can They Out?

Your question makes no sense. "Can they out"??
What exactly are you trying to do?
Forum: Troubleshooting TVs and Video Sources 10-02-2014, 07:09 PM
Replies: 2
Views: 1,612
Posted By videobruce
Re: LG 60PK250/550 series Plasma; no standby

The set is from 2010 and was left one for hours on end (a real poor practice) with no one watching. There was a fair amount of dust collected everywhere which was removed (not by a can of compressed...
Forum: Troubleshooting TVs and Video Sources 10-02-2014, 07:05 PM
Replies: 2
Views: 1,612
Posted By videobruce
LG 60PK250/550 series Plasma; no standby

When power cord is inserted into a outlet all I get are two flashes of the power LED, then nothing. Completely dead. No clicking.

The power supply, Y & Z boards all have been removed and inspected...
Forum: Troubleshooting TVs and Video Sources 10-02-2014, 06:44 PM
Replies: 49
Views: 146,246
Posted By videobruce
Re: TV Repair Reference Library

I'm trying to find power supply, Y & A sus board schematics for LG plasma TV's. Specifically for the 60PK250/550 series.
All their service manuals have are for the control & main board.
Forum: Frequently Asked Questions (No Posting) 10-02-2014, 06:18 PM
Replies: 19
Views: 11,998
Posted By videobruce
Forum: Frequently Asked Questions (No Posting) 10-02-2014, 06:15 PM
Replies: 38
Views: 26,933
Posted By videobruce
Re: How a plasma display panel (PDP) works

A cut & paste to a document for me.
Much thanks.
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