Re: MSI K7T Pro2 Ver1 - capacitors have higher values?
I positioned the camera bit badly but when testing those "O mosfets" and holding probes it will stay at approx. 32.5.
[url]https://youtu.be/RoqTv1km700[/url]Re: MSI K7T Pro2 Ver1 - capacitors h...Tv1km700[/url]
Acerman123
Member
Last Activity: 08-30-2023, 10:14 AM
Joined: 04-15-2016
Location: Finland
-
Re: MSI K7T Pro2 Ver1 - capacitors have higher values?
On mosfets near PCI slots I did get 1.5v and 1.2v, above AGP slot there was 1.5v but I measured the legs of mosfets and not placing ground probe to screwhole.
Using 200 range, the resistance from screw hole to "O mosfets" settles to 32.5...Leave a comment:
-
Re: MSI K7T Pro2 Ver1 - capacitors have higher values?
Update: Replacements for Yageo and Chemi-Con are installed but the situation did not change, 4 caps which surround the CPU and the 2 mosfets show 0V.
So I guess this board has other problems than capacitors, atleast now since it definetely had bad capacitors in the beginning of this repair attempt.Leave a comment:
-
Re: MSI K7T Pro2 Ver1 - capacitors have higher values?
Brief update, the three Yageo caps (circle) are all 5V and Chemicons (square) are 0V.
Two caps next to ram slots both show 3.3v which I think is the correct voltage for SDRAM.
When measuring around AGP and PCI slots I get either 3.3v or 5v depending on cap....Last edited by Acerman123; 08-18-2023, 09:45 AM.Leave a comment:
-
Re: MSI K7T Pro2 Ver1 - capacitors have higher values?
Brief update: the CPU is working, tested in Asus A7V133-C so problem is in the board.Leave a comment:
-
Re: MSI K7T Pro2 Ver1 - capacitors have higher values?
Brief update, I now used screw hole pad as ground and measured.
Picture attached, ones with X I get 5v on the center pin but nothing on any other pin, ones with 0 there's absolutely nothing on any pin.
On another forum someone suspected that caps might be "drifting" and mosfets will not activate because of that? The poster apparently either has similar case at the moment or has had where the caps looked fine externally but are/were still the problem....Last edited by Acerman123; 08-16-2023, 08:30 AM.Leave a comment:
-
Re: MSI K7T Pro2 Ver1 - capacitors have higher values?
Heatsink didn't get warm with fan removed from heatsink but still connected.
Unfortunately I lack the knowledge how to measure mosfets etc., but I decided to try something... I did put multimeter in DC mode and place negative lead on the center pin and then tried poking left and right pins. I did get values approx values -3.3v and -5v with 2 left mosfets but nothing on the 2 right ones, picture attached....Leave a comment:
-
Re: MSI K7T Pro2 Ver1 - capacitors have higher values?
Disconnected CPU fan, powered on the board for 5 minutes while gripping the heatsink and I don't think it got warm at all.Leave a comment:
-
Re: MSI K7T Pro2 Ver1 - capacitors have higher values?
Those bigger ones are the only electrolytes I haven't replaced so far since I don't have replacements yet.
I have tried various configurations, without either cpu, ram or gpu. I have tried with different ram sticks / slots and different gpu. Power supply is known good one since it runs that Athlon 1400 board just fine. It is still true that I haven't tested that Duron and I haven't tested another cpu in this MSI board. Externally that Duron looks fine.
Only time when the code reader displays something...Last edited by Acerman123; 08-14-2023, 07:23 AM.Leave a comment:
-
Re: MSI K7T Pro2 Ver1 - capacitors have higher values?
This is the tester I use.
I do have another Socket A board so I could test that Duron, but that other board has Athlon 1400 and its core is in quite bad shape, reinstalling the big heatsink it has could destroy it....Last edited by Acerman123; 08-13-2023, 07:14 AM.Leave a comment:
-
Re: MSI K7T Pro2 Ver1 - capacitors have higher values?
Okay, I removed those four other big caps and all of them also show more than 4700uf, three of them over 5000uf and one was 4900uf...
I replaced two G-Luxons before and when measuring they also showed more than rated capacity so I guess none of these electrolytes were good. Tayeh caps were definetely bad.Last edited by Acerman123; 08-13-2023, 02:32 AM.Leave a comment:
-
MSI K7T Pro2 Ver1 - capacitors have higher values?
Trying to fix this board, MSI K7T Pro2.
All Tayeh capacitors showed either as damaged or with uf values which were faf from what they should be so I have replaced them and all other capacitors except those big ones near CPU.
The motherboard powers on but doesn't post. My PCI bios code reader will most of the time dsplay some some kind of code if there has been no power to board for a while but I don't think those codes mean anything in this situation. If I power off the board and try powering it on the second time the code reader usually doesn't show anythin. Unplug... -
Re: Philips 40PFL3008T stopped working
I don't know, what if that spark whatever caused damage to the other board? For now I think I'll put the TV to storage, I have the original box there already.
My brother has "spare" Samsung 32" TV which I could get so "solution" would be very quick but of course it's smaller TV and only HD Ready if I remember correctly. So it would be a downgrade but then again I don't watch that often anyways.
What pisses me off is that I paid 379€ for that Philips and it failed in 2 years and approx....Last edited by Acerman123; 08-18-2016, 11:38 PM.Leave a comment:
-
Re: Philips 40PFL3008T stopped working
Yes I quickly measured that it should be good.
But I think I have now made the final mistake, I tried to remove the new diode and clear all old solder mess. Well, in this process I tore off both solder pads from the board, [f-bomb].
This repair quickly fell from being epic success to be epic fail !Last edited by Acerman123; 08-18-2016, 04:37 PM.Leave a comment:
-
Re: Philips 40PFL3008T stopped working
Because it made that audible pop I really don't know if I should continue trying to fix this TV, but I removed the PSU and nothing looks burnt. I did mention earlier that while TV worked I knew I did poor soldering job which I would need to fix. Well I didn't and now when I look the new diode is wiggling so whether or not that caused the problem it's definetely not good and infact even poorer soldering than I thought...
Since nothing is burnt on the board part of me still says I should proceed testing and maybe plugging this to...Leave a comment:
-
Re: Philips 40PFL3008T stopped working
Unfortunately this repair might have resulted in failure. I watch TV rarely so it has been couple days unplugged. It worked fine the same day I replaced the diode and I recall using it the next day also, not very long perioid but after that it has been unplugged.
Now I plugged the power cord and I can't remember if it happened instantly or after I pressed a button to turn the TV on but there was audible pop and fuse was blown in my house. My brother was on the same room and he said he saw sparks on the side which has not the power...Last edited by Acerman123; 08-18-2016, 02:53 PM.Leave a comment:
-
Re: Philips 40PFL3008T stopped working
Thanks everyone for your patience and support.
I replaced that one diode and now the TV seems to be working! I watched some TV, I just did the replacing so long term tests have not been done. I will need to do better soldering job also, I can't remember where I bought the tin (maybe eBay) but seems like it doesn't want to melt properly.
I ordered SB5100 diodes but received SR5100. First I thought I shouldn't use those and instead file a dispute, but after doing some Googling they apparently should be same type, can...Leave a comment:
-
Re: Philips 40PFL3008T stopped working
I have the board 17ips20p and it may be slightly different? If I understood correctly I have fuse in different place. I also measured those diodes on the lower left portion of the board and they are fine, it seems that all diodes except that one is good. Also on the upper left part there is apparently the component which may overheat, but atleast in this board it seems to have plenty of thermal paste?
I have attached pics. Corrections and additional info is appreciated
I ordered 10 pack of that one diode model since they don't...
Leave a comment:
-
Re: Philips 40PFL3008T stopped working
Sorry my bad, I meant diode! So then one of them is faulty.
Edit: I attached picture but in the pic the faulty one is not lifted, it's the one next to it....Last edited by Acerman123; 07-26-2016, 02:13 PM.Leave a comment:
-
Re: Philips 40PFL3008T stopped working
I have very very limited knowledge about these... but since that one resistor beeps when disconnected to board and no matter which way I put prongs, that one is clearly faulty?Leave a comment:
No activity results to display
Leave a comment: