-
ASRock B550 PG Velocita
Ryzen 9 "Vermeer" 5900X
32 GB G.Skill RipJaws V F4-3200C16D-32GVR
Arc A770 16 GB
eVGA Supernova G3 750W
Western Digital Black SN850 1TB NVMe SSD
Alienware AW3423DWF OLED
"¡Me encanta "Me Encanta o Enlistarlo con Hilary Farr!" -Mí mismo
"There's nothing more unattractive than a chick smoking a cigarette" -Topcat
"Today's lesson in pissivity comes in the form of a ziplock baggie full of GPU extension brackets & hardware that for the last ~3 years have been on my bench, always in my way, getting moved around constantly....and yesterday I found myself in need of them....and the bastards are now nowhere to be found! Motherfracker!!" -Topcat
"did I see a chair fly? I think I did! Time for popcorn!" -ratdude747 -
Re: Help for repair Gigabyte GA-7VT600-1394
Looking again those 6.3V 470uF Lelon "RGA", they look more like 6.3mm than 5mm.
If they are 6.3mm then I would upgrade to FC or something as mentioned before.
-
I treat 220uF and up 6.3mm as I do 8&10mm caps.
Under 220uF I treat 6.3mm as the 4&5mm caps.
That's just how -I- do it.... I'm more picky than most.
.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
-
Re: Help for repair Gigabyte GA-7VT600-1394
Thanks for your opinion but the max Barton the board takes is the 3200+ which has a TDP of 79.2 watts.
.
http://www.giga-byte.co.uk/support-d....aspx?pid=1667
http://en.wikipedia.org/wiki/List_of...0.2C_130_nm.29
.
Stock 1.65v @ 79.2w => 48a and 0.03437ohm
0.03437ohm @ 1.85v doesn't even break 100w.
.
Regardless, you'd have to be insane to OC on a board with such a crappy power plan.
.Last edited by PCBONEZ; 11-08-2010, 06:43 PM.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
-
Re: Help for repair Gigabyte GA-7VT600-1394
Hi people, i asked to italian rubycon distributor how can i obtain MBZ/MCZ cap series.
They reply me they contacted rubycon to ask a provision of both MBZ/MCZ of the type i asked :
1000uF 6.3
1200uF 6.3
1500uF 6.3
3300uF 6.3
Today the italian distributor tell me that Rubycon will outdate this series and Rubycon propose to them
6.3 ZLG M EFC
for all the values.
What do you think about this serie? After a search i discovered them not so new, are you esperienced with them in motherborad replacement?Comment
-
Re: Help for repair Gigabyte GA-7VT600-1394
ZLG are motherboard grade but whoever at Rubycon told you they are adequate to replace MBZ or MCZ was an idiot.
That is clearly an evaluation made by a sales/marketing type 'corporate suit' and not by an engineer or tech that actually knows something about electronics.
[Why don't you send said idiot a link to this post.]
ZLG are generally -NOT- suitable replacements for MBZ or MCZ.
ZLG are ABSOLUTELY NOT 'direct replacements' for MBZ or MCZ.
ZLG are generally -NOT- suitable for VRM use on modern motherboards.
Series - Size - Ripple - ESR
ZLG - 8x20mm - 1600 - 0.020
MBZ - 8x20mm - 1870 - 0.019
MCZ - 8x20mm - 2350 - 0.012
- ZLG 8mm handles 14% less Ripple and has 5% more ESR than MBZ
- ZLG 8mm handles 32% less Ripple and has 67% more ESR than MCZ
[14% less Ripple is a big deal...]
Series - Size - Ripple - ESR
ZLG - 10x20mm - 2180 - 0.014
MBZ - 10x20mm - 2550 - 0.013
MCZ - 10x20mm - 2770 - 0.011
- ZLG 10mm handles 17% less Ripple and has 8 % more ESR than MBZ
- ZLG 10mm handles 79% less Ripple and has 27% more ESR than MCZ
If the old cap is short [say 8x15mm] and you use a longer ZLG [say 8x20mm] then -occasionally- the larger can size will compensate for ZLG being a lesser grade cap, but you will need to check both data sheets for the specific caps to know for sure.
The problem is there won't always be a long enough ZLG with the correct uF/volts and sometimes extra long caps simply won't fit due to clearance issues.
AFAIK MBZ was already dropped.
If Rubycon intends to drop MCZ too and you need motherboard-VRM grade caps in bulk then your contact options are:
[In order of my personal preference.]
Panasonic about their FJ and FL series. [FL are custom ordered. No data sheet. Don't think you can buy them.]
Suncon [Formerly the Sanyo electrolytic cap division, now their own company.] about their WG series.
Nichicon about their HM, HN or HZ series'.
Or [last choice] Samxon about their GD, GC or GA series'.
.
[Equivalencies, least to best grade]
MBZ=WG=HM=GD=[FJ in 10mm sizes]
FJ 8mm are in between MBZ and MCZ.
MCZ=HN=GC
HZ and GA are better specs than MCZ but expensive so you might as well use solid polymer instead.
.Last edited by PCBONEZ; 11-10-2010, 02:55 PM.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
-
Re: Help for repair Gigabyte GA-7VT600-1394
Really bad.
I asked to the official italian distributor, very friendly, because they don't sell to privates.
They told me that they don't have MBZ/MCZ no more, but they asked me what type and number i need because they would ask a sampling, Today they responded to me that Rubycon responded to them proposing ZLG.
At the moment italian distributor don't have ZLG too, and if i accept , they would order a sampling of ZLG only for me.
It's really BAD that someone in Rubycon proposet these caps to them.Comment
-
Re: Help for repair Gigabyte GA-7VT600-1394
I should note that Chemicon KZG and KZJ are comparable to Rubycon MBZ and MCZ respectively, however KZG and KZJ are not recommended due to high failure rates.
Other Chemicon series don't have those problems.
Looks like Rubycon is going to market themselves right out of the main stream.
.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
-
Re: Help for repair Gigabyte GA-7VT600-1394
How is it that a 0.01 reduction in ESR amounts to 5% less? Surely the difference is miniscule?Comment
-
Re: Help for repair Gigabyte GA-7VT600-1394
.019/.020 = 0.95 [aka 95%]
.
Oh and,
100% - 95% = 5%
.
They sell calculators at the dollar store now.
.Last edited by PCBONEZ; 11-10-2010, 04:05 PM.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
-
Re: Help for repair Gigabyte GA-7VT600-1394
Not so fast... .001 and .01 are not the same are they? 1/100th is not the same as 1/1000th...Comment
-
Re: Help for repair Gigabyte GA-7VT600-1394
I dunno where you shit .01 from.
Besides, as I pointed out the concern between those two is the difference in the Ripple.
270 mA less per cap is significant, particularly in a VRM Vcore side where loss per cap will be multiplied by the number of caps in parallel.
Given the specified caps and a fairly common 8 cap VRM Vcore the overall loss of Ripple capability would be over 2 amps.
[For your benefit: 0.270 x 8 = 2.16 ]
.020 - .019 = .001
And .001 is 5% of .020 [Which is what I said.]
I REALLY suggest you get that calculator.
.Last edited by PCBONEZ; 11-10-2010, 10:35 PM.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
-
Re: Help for repair Gigabyte GA-7VT600-1394
Am I correct in assuming that impedance is measured in Ohms? (Yes, I'm aware that impedance does not always equal ESR, but let's stick with impedance for now) Where' I'm getting confused is this...
I am assuming that when a capacitor's impedance is measured as 0.020, it is 0.020 of 1 Ohm... So my assumption is that 0.020th of an ohm is not that much more than 0.019th of an ohm. That's why I asked the question. I'm not questioning your arithmetic.Comment
-
Re: Help for repair Gigabyte GA-7VT600-1394
Yes, the Impedance units are Ohms.
At 100 kHz [the frequency used in data sheets] the total impedance is due almost entirely to ESR.
- That's because at around 100 kHz Xc and Xl are nearly equal and they effectively cancel each other out leaving only the effects of ESR.
[Long thread on that with all the math buried somewhere in the forum here.]
That's why [one reason] they use 100 kHz in the data sheets and why impedance and ESR are used interchangeably as the heading in the data sheets from manufacturer to manufacturer [or even from series to series sometimes].
So: 0.020 ohm = 20 milliohms and 0.019 ohm = 19 milliohms.
And the difference is 0.001 ohm = 1 milliohm.
The 1870 from above is mA and = 1.87 Amps. [And that's ONLY for the Ripple.]
-
But all that doesn't affect the % of change between the two caps so I don't understand where the question is coming from.
.001 Ohms isn't much different but -as I said twice now- the Ripple Rating is the problem in that comparison.
That 2.16 amps is 2.16 amps OF RIPPLE,,,, [Nothing to do with DC power amps.]
-
Lets say you have 35mV Ripple on x8 of that .019 ohms / 1870 mA cap.
[x8 parallel => 0.002375 Ohms and 14.96 amps max.]
35mV across that ohms gives 14.74 amps of Ripple Current through the cap.
Now you have the same 35mV Ripple on x8 of the .020 ohms / 1600 mA caps.
[x8 parallel => 0.0025 Ohms and 12.80 amps max]
35mV across that ohms gives 14.0 amps, which exceeds the Ripple Current rating.
-> Those caps will overheat and die young...
And that's why ZLG is not suitable to replace MBZ or better when MBZ or better are called for.
[Except when the ZLG is longer [larger can] to the point of making it's ESR and Ripple match or exceed the MBZ's specs.]
.Last edited by PCBONEZ; 11-11-2010, 02:07 AM.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
-
Re: Help for repair Gigabyte GA-7VT600-1394
So you can see why I had some doubts here. Your logic was .020 - .019 = .001 and .001 constitutes a 5% discrepancy in the ESR rating..020 - .019 = .001
And .001 is 5% of .020 [Which is what I said.]
But it doesn't. Effectively, you finally answered my question by admitting that you're using a multiplier to your equation which is also the discrepancy in the ripple.
Speaking of ZL, I have an Asus P4S533-VM with some of them in the VRM here. Not doubting what you say, just letting you know.Comment
-
Re: Help for repair Gigabyte GA-7VT600-1394
No, I can't see why you had doubts.
A grade school kid could understand it.
- And you remark is complete bull shit.
It DOES constitute a 5% discrepancy in the ESR rating.
Those numbers compare one cap to one cap and the discrepancy IS 5%.
There is NO multiplier involved in that statement at at all. - None.
What I said is 100% correct.
It's basic math.
You obviously need some help with that.
I'm sure there are remedial math classes available in your area.
.Last edited by PCBONEZ; 11-11-2010, 02:56 AM.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
-
Re: Help for repair Gigabyte GA-7VT600-1394
No one spoke of ZL.
ZL ESR is roughly twice that of ZLG.
So, are you offering further evidence that Asus builds crap or was this a recap by someone that doesn't know what they're doing?
.Last edited by PCBONEZ; 11-11-2010, 03:02 AM.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
-
Re: Help for repair Gigabyte GA-7VT600-1394
Ok, so assuming the caps had the same ripple, you're saying that 0.020 of one ohm is 5% more than 0.019?It DOES constitute a 5% discrepancy in the ESR rating.
Those numbers compare one cap to one cap and the discrepancy IS 5%.
There is NO multiplier involved in that statement at at all. - None.
No, these caps most certainly are stock. There's three of them with 6 6.3V 3300uF Nichicon HMs by the VRM (Which need to be replaced). They could have used the same principle you mentioned of using higher ESR caps by overcompensating with lower ESR ones.Comment
-
Re: Help for repair Gigabyte GA-7VT600-1394
The earlier discussion specified Vcore caps [CPU side of VRM].
ZL [and ZL grade] aren't all that uncommon on the other side [PSU side] of the VRM.
They have room for big caps on the PSU side so ZL can be made to work.Last edited by PCBONEZ; 11-11-2010, 03:43 AM.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
-
Re: Help for repair Gigabyte GA-7VT600-1394
PSU side is handling noise made by the switchers in the PSU and that has already gone through the PSU O/P filter caps.
CPU side is handling noise made by the VRM MOSFETs and there aren't any other filters to reduce the Ripple before it gets to them.
.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
-
Re: Help for repair Gigabyte GA-7VT600-1394
Success!
12 x Lelon "RGA" 6.3V 470uF replaced with Panasonic "NHG"
11 x UCC "KZJ" 6.3V 1000uF replaced with Nichicon "HN"
7 x UCC "KZJ" 6.3V 3300uF replaced with Samxon "GC"
2 x GSC "LE" 16V 470uF replaced with Panasonic "FC" (Had to go to 25V to match the ESR)
Order was almost completely done from Mouser but I couldn't for their 6.3V 3300uF Nichicon HN caps to arrive February. Only other options were Rubycon MCZ or Samxon GC.
For Lelon "RGA" I used general purpose Panasonic "NHG" capacitor. Is this OK? Datasheet
Thank you PCBONEZ for your assistance.Attached FilesLast edited by mockingbird; 01-11-2011, 11:50 PM.Comment
-
-
Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
Hi, this is my personal laptop, which the original board (lets call it Board A) blew up PU8700 (TPS51486), making a hole on the board, i had left the laptop at my desk one day with the battery fully charged and didn't touch it for a week, but when i tried to turn it on it didn't
Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic... -
All left and right refers to looking from rear of TV (or looking from front with TV upside down)- TV came with vertical bars and no image. Found faulty TVS on left buffer board. Also replaced T-Con (may have damaged the original while hot air removing components, board has slight warp) and have full image but few horizontal lines on the screen. Some of the lines appears to be 2 pixel tall while others are 1 pixel tall.
- Disconnecting left and right buffer board potentially reveals problems on both sides with different signals (unless this T-Con require jumper like Samsung FB_TRDY1&3) Fault
-
Hi There,
This TV was auto switching off after few seconds with some vertical lines on the screen, so got a new TCON board and replaced it.
After replacing the TCON board it was working fine and i set it up with everything, used for few hours, then had the bright idea to update the software on it. During the update process, TV switched off and now no audio or video. No relay switch sound.
More Details
TV Model - LG OLED77G1PUA
Got the same exact TCON board from TVPartsToday and replaced it. But didnt transfer the EPPROM data (didnt... -
Hey guys great forum glad to have found it. I bought a Sony XBR 65X900C cheaply because it didn't work. No signs of life at all not even a light/led. All I hear is a brief high voltage sound when I throw the power to it.
Didn't see any obvious signs of damage so right away started checking voltages. This is what I see:
Power Board Connector that goes to Main board
CN6401
Pin 01 NC
Pin 02 NC
Pin 03 "BL_ON": 0V
Pin 04 "N/C"
Pin 05 "STBY 3.3V": 3.5V
Pin 06 "GND": N/C
Pin 07 "AC_OFF"...
Comment