Topic: GRIDSEED G-BLADE Overclocking 7Mh/s, improvements and repair - page 27. (Read 74047 times)
5002? on the Pic from Cryptomining-Blog its 5301
I see that replacament should work 7004 have much more ampers.
But didn't find 5002
But didn't find 5002
Which resistor value will then be enabled ?
36k resistor ? Also, where is it located ?
Regards
33k (the one I replaced for the first mod)
27k
33k
36k <- should use this one when bridging
So this one is withouth changing resistor.
I am more interested to adding mosfets to Q6 to Q8
what is exact mark of Q6 to Q8, here on pic is unreadable?
I am more interested to adding mosfets to Q6 to Q8
what is exact mark of Q6 to Q8, here on pic is unreadable?
it's been discussed on this thread.
they are 2x IRF5300 and one IRFH5302
I ordered IRFH7004 to try as a direct replacement and IRFB7437PBF for an homemade powerboard
So this one is withouth changing resistor.
I am more interested to adding mosfets to Q6 to Q8
what is exact mark of Q6 to Q8, here on pic is unreadable?
I am more interested to adding mosfets to Q6 to Q8
what is exact mark of Q6 to Q8, here on pic is unreadable?
here is the bridge voltmod for the blade. still untested, I'll have to physically check on the board for voltage =1 to be sure
thanks! great work here is the bridge voltmod for the blade. still untested, I'll have to physically check on the board for voltage =1 to be sure
Which resistor value will then be enabled ?
36k resistor ? Also, where is it located ?
Regards
I just bought a blade and found some dodgy chinese software that can get an extra 100k/s out of a normal gridseed but it works, not sure about the blades though. I would like to try it one one just worried about breaking ir. Looks like the software "undervolts" the gridseed in someway (thats what the terminal says anyway) and then bam I got 100kh/s extra. You have to do some hardware messing around with also though,
I dont think Im allowed to post public links on this forum so pm me if you want the link.
I dont think Im allowed to post public links on this forum so pm me if you want the link.
is it better to buy gridseed or buy btc?
probably it's better to read up some days about cryptocurreny & mining for you.
is it better to buy gridseed or buy btc?
here is the bridge voltmod for the blade. still untested, I'll have to physically check on the board for voltage =1 to be sure
has already someone found the "vMod 1" aka bridge-two-jumpers?
I checked on the schematics of the pod, so, basically, you are bridging R333, and then you enable voltage=1 all the time by bridging R337.
They are connected to pin 13 and 12 of the up1509, so quite easy to find.
I'll have a look after breakfast.
I'll check on the PCB, but not sure I'll mod this one. I managed to get 2 hw errors on 8 hours @ 7.2MH/s with my custom cooling.
I'll buy a second one to try.
[2014-05-04 08:14:07] Runtime: 8 hrs : 48 mins : 59 secs
[2014-05-04 08:14:07] Average hashrate: 7.2 Megahash/s
[2014-05-04 08:14:07] Solved blocks: 0
[2014-05-04 08:14:07] Best share difficulty: 1.5M
[2014-05-04 08:14:07] Share submissions: 2352
[2014-05-04 08:14:07] Accepted shares: 2337
[2014-05-04 08:14:07] Rejected shares: 15
[2014-05-04 08:14:07] Accepted difficulty shares: 3346304
[2014-05-04 08:14:07] Rejected difficulty shares: 20864
[2014-05-04 08:14:07] Reject ratio: 0.6%
[2014-05-04 08:14:07] Hardware errors: 2
[2014-05-04 08:14:07] Utility (accepted shares / min): 4.42/min
no, can u explain more ?
Or give us the link
Or give us the link
has already someone found the "vMod 1" aka bridge-two-jumpers?
these are a little bigger and price is lower. here is link you can see it
http://www.ebay.com/itm/New-High-Quality-5pcs-11x11x5mm-adhesive-Aluminum-Heat-Sink-For-Memory-Chip-IC-/131014795047?pt=LH_DefaultDomain_0&hash=item1e81171f27
http://www.ebay.com/itm/New-High-Quality-5pcs-11x11x5mm-adhesive-Aluminum-Heat-Sink-For-Memory-Chip-IC-/131014795047?pt=LH_DefaultDomain_0&hash=item1e81171f27
for some reasons, item restricted by ebay... can't see it
I used the ones from this auction.
http://cgi.ebay.fr/ws/eBayISAPI.dll?ViewItem&item=251251434021&ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
1mm too small, but they are doing the job.
higher fins would have been better too
To stay on topic, since I'm back home, I made some improvements to the cooling.
Looks interesting for now.
heatsinks in each chips, forced air flow on the overheating parts with custom cover.
a few pics will be posted soon.
I also tried dual 25V 1000uF capacitors I had at hand, but they don't improve anything.
So 220uF 25V should be enough and a little smaller.
BTW, I managed to melt a power plug from my cables by trying back a 46K resistor. Simply too much current for it to handle if you use a single plug.
Looks interesting for now.
heatsinks in each chips, forced air flow on the overheating parts with custom cover.
a few pics will be posted soon.
I also tried dual 25V 1000uF capacitors I had at hand, but they don't improve anything.
So 220uF 25V should be enough and a little smaller.
BTW, I managed to melt a power plug from my cables by trying back a 46K resistor. Simply too much current for it to handle if you use a single plug.
you mean heatsink on each power supply chip? Mining chips are not that hot i assume
hihger value capactior can't do much good, because It is just glading input capacitor.
Try to put some larger heatsink on the bottom side of board where it is high temperature of power chips
heatsinks on each mining chip. after overclocking with 43K resistor, they are getting hot. actually, the body of the blade is around 40°C. warm to touch.
heatsink under the power chips helps too, but I only have 1 that fits at the moment.
To stay on topic, since I'm back home, I made some improvements to the cooling.
Looks interesting for now.
heatsinks in each chips, forced air flow on the overheating parts with custom cover.
a few pics will be posted soon.
I also tried dual 25V 1000uF capacitors I had at hand, but they don't improve anything.
So 220uF 25V should be enough and a little smaller.
BTW, I managed to melt a power plug from my cables by trying back a 46K resistor. Simply too much current for it to handle if you use a single plug.
Looks interesting for now.
heatsinks in each chips, forced air flow on the overheating parts with custom cover.
a few pics will be posted soon.
I also tried dual 25V 1000uF capacitors I had at hand, but they don't improve anything.
So 220uF 25V should be enough and a little smaller.
BTW, I managed to melt a power plug from my cables by trying back a 46K resistor. Simply too much current for it to handle if you use a single plug.
you mean heatsink on each power supply chip? Mining chips are not that hot i assume
hihger value capactior can't do much good, because It is just glading input capacitor.
Try to put some larger heatsink on the bottom side of board where it is high temperature of power chips
To stay on topic, since I'm back home, I made some improvements to the cooling.
Looks interesting for now.
heatsinks in each chips, forced air flow on the overheating parts with custom cover.
a few pics will be posted soon.
I also tried dual 25V 1000uF capacitors I had at hand, but they don't improve anything.
So 220uF 25V should be enough and a little smaller.
BTW, I managed to melt a power plug from my cables by trying back a 46K resistor. Simply too much current for it to handle if you use a single plug.
Looks interesting for now.
heatsinks in each chips, forced air flow on the overheating parts with custom cover.
a few pics will be posted soon.
I also tried dual 25V 1000uF capacitors I had at hand, but they don't improve anything.
So 220uF 25V should be enough and a little smaller.
BTW, I managed to melt a power plug from my cables by trying back a 46K resistor. Simply too much current for it to handle if you use a single plug.
Well, that's the price of progress
How much current is the blade pulling when overclocked?
Those coaxial plugs are obviously not suited to the task.
You might want to try 3500uf@35V and see what happens.
I put them across the output of any power supply I use to power these seeds. Even a well regulated and filtered one. It helps!
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