Re: Toshiba 40rv525u power led flashing / will not come on
No. I tried replacing everything but the t-con board and the panel.
s40ward
Member
Last Activity: 08-19-2016, 07:24 AM
Joined: 09-30-2013
Location: Dayton, OH
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Re: Toshiba 40rv525u power led flashing / will not come on
Ok. Well thanks for the responses anyway. If I happen to find a solution I'll be sure to update the thread.Leave a comment:
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Re: Toshiba 40rv525u power led flashing / will not come on
Considering I've already replaced the power board and main board, and gotten the same results, would it be sensible to replace the t-con or phase inverter? Can they cause the issues I'm having? It would be infinitely more valuable to me to find the problem at the component level, but I want it to work again lol.
Is it possible the panel itself is bad?Leave a comment:
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Re: Toshiba 40rv525u power led flashing / will not come on
I replaced the capacitors today and am finding identical results.Leave a comment:
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Re: Toshiba 40rv525u power led flashing / will not come on
Using the esr meter (mesr-100 v2) it shows both as "good cap with lo esr".
.260 ohm at C502
.209 ohm at C504
I'll head to the electronics store tomorrow and pick up some replacement capacitors.Leave a comment:
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Re: Toshiba 40rv525u power led flashing / will not come on
That is correct. About the schematics..I used a free PDF print output program and converted them all. I believe all the values are visible, let me know if they are not. I'll get a better copy to you....Leave a comment:
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Re: Toshiba 40rv525u power led flashing / will not come on
One other thing..I tested the current draw from the dummy load, and it was varying around 2.5A. I plugged in the main board and took the same measurement, and it was roughly the same.Leave a comment:
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Re: Toshiba 40rv525u power led flashing / will not come on
I've tried for months to open this schematic, and I finally succeeded today!
I've attached an image that shows you what the schematic looks like in the Toshiba ZEUS program. To open it I had to install a VMware virtual machine with Windows XP, IE6, ZEUS 2.0, and DWF Viewer 6.0 w/ zeus patch. IE took some tweaking as well. If you're willing to do all this I'll be more than happy to get you all the software you need, but if you'd rather direct me I can take screenshots of specific areas of the schematic....Leave a comment:
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Re: Toshiba 40rv525u power led flashing / will not come on
I purchased a 5ohm 10watt resistor today and tested pins 10-12 and (if I took the reading correctly) read a steady 5v. As far as the blinking pattern, I have not been able to recognize a pattern whatsoever. It blinks at a constant rate. I tried waiting 30 seconds, but nothing changes.Last edited by s40ward; 10-03-2013, 07:22 PM.Leave a comment:
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Re: Toshiba 40rv525u power led flashing / will not come on
Well I went through all the resistors I have on hand, and the closest I can get is to use 22x 220 ohm resistors and 2x 250 ohm resistors for a parallel resistance of ~9.25 ohms (if my math is right). So....I guess I'll be making a trip to the store tomorrow.
I did however notice this forgotten piece of equipment. Can it be used? (pic attached) If not I'll bump the post when I have the proper resistor....Leave a comment:
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Re: Toshiba 40rv525u power led flashing / will not come on
I checked the power and main boards and I do not see anything quite like that. I'll start looking for a resistor close to that rating. Most of what I have here seems to be higher resistance.Leave a comment:
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Re: Toshiba 40rv525u power led flashing / will not come on
After disconnecting P802 and reading pins 10-12 they all show a steady 5.0658v. Thank you for your response. Does this indicate a faulty main board?Leave a comment:
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Re: Toshiba 40rv525u power led flashing / will not come on
I found another service manual I'll upload here, but it keeps giving me ZEUS errors. I've tried this several times before and never had success. The ZEUS engine is a PITA. I believe this has the information needed. Perhaps you guys have experience with this?
edit: file too large to upload directly to the forum. I uploaded it to a file sharing service here.
[URL="http://www.filedropper.com/toshiba40rv52uservicemanualzeus"]http://www.filedropper.com/toshiba40rv52uservicemanualzeus[...Last edited by s40ward; 10-01-2013, 07:53 PM.Leave a comment:
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Re: Toshiba 40rv525u power led flashing / will not come on
I thought it might help if I uploaded some additional pictures and a video.
The video is of the power LED just so that can be seen as well.
[URL="http://img818.*************/img818/4681/qlofmubsnnridolyttvaax.mp4"]http://img818.*************/img818/4681/qlofmubsnnridolyttvaax.mp4[/URL]Re: Toshiba 40rv525u power led flashing / will not come on
I thought it might help if I uploaded some additional pictures and a video.
The video is of the power LED just so that can be seen as...Leave a comment:
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Re: Toshiba 40RV525R service manual?
Hello. I know this is an old thread, but I have the service manual and wanted to leave it here in case someone came here looking for it....Leave a comment:
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Re: Toshiba 40rv525u power led flashing / will not come on
Sure! I followed the troubleshooting guide but it pointed to the power supply or main board, both of which I've purchased replacements for and neither fixed it. There's always the case of a bad replacement..but I figured it was time to call in some help. I'll be available all day to work with whomever wants to help! Thanks.
P.S. I also uploaded this on the other thread here asking for this service manual. Found it on scribd after a LONG search....Leave a comment:
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Re: Toshiba 40rv525u power led flashing / will not come on
Yes, I can check voltages. Please let me know if my answers are deficient or if I skipped any of the important voltages. I truly appreciate the attention on this. I attached a diagram of my power supply connectors to be sure we're on the same page.
P803 pins 1-5 are all 24v, drop to 7v over about 1 second, then back up to 24v repeatedly
P802 pins 8 and 9 are ~11v, drop to ~2v over about 1 second, then back up to ~11v
P802 pins 10 and 11 fluctuate between 1v-5v.
P802 pin...Last edited by s40ward; 10-01-2013, 01:56 AM.Leave a comment:
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Re: Toshiba 40rv525u power led flashing / will not come on
I see. I have confirmed after waiting the TV will not turn on with the remote or power on button. I will happily test voltages, provide high-res pictures, or anything else I can to help.
Also, I have read pretty much everything google returns regarding this model number and problem, including on badcaps.net. Most threads end before a resolution, or are fixed by something I've already tried. I also read your LCD TV & Monitor troubleshooting guides. I'll continue reading until someone engages me with testing...Last edited by s40ward; 10-01-2013, 12:59 AM.Leave a comment:
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Toshiba 40rv525u power led flashing / will not come on
Hello all,
I have a Toshiba 40rv525u that recently stopped working. The power LED will begin blinking immediately after the TV is plugged in. I don't believe it's blinking any kind of diagnostic code, as there is no pattern, it just blinks every couple seconds repeatedly. I have tried replacing the power board and the main board, but this did not solve my problem. I believe the problem is keeping the TV from it's normal start-up process, as there is absolutely no light from the panel or sound.
I have attached a picture of my workbench with the TV open. I have a benchtop...Last edited by s40ward; 09-30-2013, 11:43 PM. -
Re: New Members - please post your introductions here
Hello from Dayton, Ohio, USA. I'm new to the forum. Hoping to get some help with my LCD TV that stopped working recently. Good luck to all.Leave a comment:
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