Topic: GridSeed 5-chip USB miner voltage mod - page 51. (Read 156991 times)

great on getting the 5V mod working,, correctly
1200 is gonna be shaky with a 47k resistor.
You should use at least a 50k if not 52k...but at 52, it will start to suck too much juice and not yield maximum results, per my sweet spot test reports...
Lettuce know how you get along, lil doggie!

YoYo

Everything working fine.

Was just that the solder was not making contact properly.

And as I was launched also removed the SMD's and soldered the 47K's in place, took me a while with my cheapo solder iron but it's done and

the GS's are hashing happily right now at 1000mhz will go gradually until 1200 to see what's the sweet spot.

Thanks Wolfey and everyone else whom have contributed to this thread.

I bought a Weller 35watt iron and a pencil tip for it.

Picked my worst GS unit and now the little bugger has been running at 1200 for the past couple errors w/o a HW error (yet).

I did notice that the heatsink wasn't tightened down properly thus one of the GS chips wasn't making full contact with the thermal pad.  That might have something to do with the HW errors as has been mentioned before.

I'm going to begin modding my other GS units starting tomorrow ... not today.

It was a nerve-wracking experience for me.  But I have one under my belt now.  I at least know the general idea now.

Hi,

could someone tell me if this is the correct place as to use Wolfey's 5v mod? I tried it and fan does not run when I solder it there.

PS: I unsoldered it and just holding it in place now because I did not want to make it run and maybe soldered on the wrong component.

I make them run fanless now as they are not yet voltmoded but in the future I will.

Otherwise I'll just put the fan on a 5v rail of my PSU

must admit my previous soldering irons were cheapish ones - mid range. no temperature control. So i had a bunch of different watt soldering irons. Not to mention different tips, some fitted but none fitted all the irons so annoying. And i had several soldering irons blow on me too, heating element fried type thing. cant cant it or even get new ones, so id been looking to get a temperature controlled one for a while, and when the cheap hot air station i had - used mainly for heat shrinking tubing - went as well i decided that i was gonna get new and upgrade. Then the bitcoin fase entered and i started modding the the sticks, after doing many resistor swaps i thought hot air station got to be easier way to do this. bit of online research and invested in the whole deal complete reworking station. has temperature controlled soldering iron - arrgh so sweet itself  - air hot mounted gun, temperature probe and surface pre heater too. Plus it has several arms for irregular PCB shapes - which turned out to be a bounes for the round PCB of the gridseeds. the only thing it was missing was a light and magnifying glass. But that nothing. Oh for those wondering its aoyue. Good name, plenty of spare parts. I thought it was American so i was disappointed to find it was made in china. BUT i must say its one of the few made in china that have quality, you can see straight away from the build quality of it.

here it is : http://www.aoyue.com/en/ArticleShow.asp?ArticleID=465

Not looked back. For those that are more into doing it with soldering iron, or dont want to invest in a hot air station, i can highly recommend a slot type tip or even better soldering tweezers. that way you can apply the heat to desolder and solder at both points of the smd resistor at the same time. I spotted one and nearly got one myself but ive not used one but think it would be almost as easy as the hot air.

Seriously wolfey2014 get one great toy! JUST get a quality one - same goes fro anyone investing in a soldering iron - itll last longer more reliable and constant, id say aoyue, or weller, there others as well but i can think of the names of them now. And for those going soldering iron route make sure the iron has interchangeable types the type the slide over the heating element. Provides better heat transfer.


I did one the other day i found the solder started to give at around a temperature of 230- 240 on the hot air gun, i also plugged in my temperature probe to check the temperature at the surface of the SMD resistor, and it read 230, just as i touched the resistor with the probe it slid out of place across the board. thankfully i didnt knock anything else - still got a bit of a big nozzle on for 0402 series , new nozzle in post. Oh all temperature are in Celsius.

And soldering SMD is totally possible with soldering iron, and this guy makes it look like a walk in the park, serious skill!!!

https://www.youtube.com/watch?v=5uiroWBkdFY

Did you have the usb connected after you soldered it to test the fan? If you have a multimeter it would probably be less hassle to just pull that out and check to make sure that you are getting a voltage there.

Hmm that's weird then. I'll try on an other pod to see if it also gives problems. If it does then there must be something with the connection of the

solder to the board or so 

That is the correct side of the correct component for 5v operation.  I am not sure why that did not work for you as it worked on mine.

Are multipools even worth it? I see you got over 500k accepted shares in 24 hours. I'm mining LTC and over 24 hours I only got about 5k in accepted shares per gridseed. Just wondering if I should which.

Thanks!

All kinds, its a multipool.

What coin are you mining?

Well it's been 24 hours. Here are my results.

CGMiner reports no hardware errors, chugging along nicely.


Here are my pool results: