EverDrive Forum

General => EverDrive GB => Topic started by: djpannda on April 16, 2014, 06:11 AM

Title: Everdrive gb issue.
Post by: djpannda on April 16, 2014, 06:11 AM
I just received my everdrive eb. I loaded it with roms on a 4gb card. When i try to play it on gameboy pocket it loads but the contrast is extremely dark and when i pick a game it says erasing and restarts with out loading a game. then it says disk int and keep restarting. I have changed the mircosd to 8gb and the same results. I even changed the batteries but when i play it on a GBA it plays normal without issue.

Any ideas?

edit: i was able to borrow a gbc and it works normally also
Title: Re: Everdrive gb issue.
Post by: KRIKzz on April 16, 2014, 10:36 AM
May be something wrong with with yours gb pocket? With my pocket cart working fine
Title: Re: Everdrive gb issue.
Post by: suiken_2mieu on April 16, 2014, 10:44 PM
Have you tried using an AC adapter on your GBP? Maybe it's a power issue.
Title: Re: Everdrive gb issue.
Post by: djpannda on April 18, 2014, 03:04 AM
alight, I tried my gameboy pocket with a/c adaptor and it works without issue... weird!! I tried it with batteries I found (with charge) and I bought cheap AAA... imma buy brand and see if it works with good AAA.
Title: Re: Everdrive gb issue.
Post by: richisawesome on April 25, 2014, 03:25 PM
It's because of the higher power drain on those diddly AAA batteries. Is exactly the same on my backlit pocket.

Solution: Don't use cheap alkaline batteries. Use decent lithium or rechargables. Problem solved.
Title: Re: Everdrive gb issue.
Post by: jake74 on April 26, 2014, 10:07 PM
Exactly the same on my Density screen modded pocket, resets and resets. AAA batteries not giving enough juice.

Screen modded original GB is fine.
Title: Re: Everdrive gb issue.
Post by: Joybit on April 28, 2014, 04:06 AM
Funny, my light-modded GBP seems to work just fine on batteries.  I'd definitely say power issue in terms of battery quality or something.
Title: Re: Everdrive gb issue.
Post by: KRIKzz on April 29, 2014, 12:37 PM
Funny, my light-modded GBP seems to work just fine on batteries.  I'd definitely say power issue in terms of battery quality or something.
Or maybe some screen mods draw more energy than other
Title: Re: Everdrive gb issue.
Post by: n00b on April 29, 2014, 07:23 PM
Hi there,

I have a similar Problem. I've received my 2 ED GBs. One is working perfect on the GB Pocket (serial number 0040) and the other one (serial number 003E) not - it only shows a glitched Nintendo logo after starting games (as you can see in the attached photo) and nothing happens or it interrupts loading and restarts the Game Boy Pocket.

I have tested the ED GBs with the same Game Boy Pocket, the same SD card, the same games and also without SD card...

Further testing showed, that the ED GB works fine with my Super Game Boy and my GBA (with and without SD card)?

I have also tested with high value batteries but the problem still persists.

Does anyone knows how to fix this problem or why one EDGB works fine and the other one not?
Title: Re: Everdrive gb issue.
Post by: KRIKzz on April 29, 2014, 08:09 PM
This looks more like problem with contacts. May be some dirt on cartridge contacts
Title: Re: Everdrive gb issue.
Post by: n00b on April 29, 2014, 08:42 PM
Okay, I've cleaned the contacts of the cartridge and even of the connector in the GB Pocket - no success :(

EDIT: After testing a while with the second GB ED it turns out that even this one is now not able to write the games from SD card to the flash chip anymore. So I think this is caused by the loss of battery power (now I have the changing contrast and the rebooting issues, too).

But when I remove the SD card on both ED GBs they work fine. Therefore I've tested some other SD cards but the problems persist.

So I think the power supply of the GB Pocket is to weak for the ED GB after a relatively short amount of time.

But it ist still strange to me, why one ED GB seems to need a lesser amount of power than the other one.....????

Is it possible to change this problem by a firmware update etc. in the future, please? :)

EDIT: Another member of the circuit-board forum reports exactly the same behavior of his ED GB....
Title: Re: Everdrive gb issue.
Post by: JChrisK on April 30, 2014, 12:34 AM
Well and here i am ;)
As n00b said my edgb with serial 0041 just restart while the cart try to init the OS. I tried with a power supply and that way it works as expected. The gameboy pocket is original and has no mods (backlight etc). Would be great if you can have closer look on that kind of issue.
Title: Re: Everdrive gb issue.
Post by: KRIKzz on April 30, 2014, 01:17 AM
here is how it working with by gb pocket, even with not very frash batteries https://www.youtube.com/watch?v=KaMYOZ_pifE
At this moment i have no idea why you guys have problems, may be some sd cards draw a lot, or may be different gameboy pcb revision exist, dead capacitors inside of game boy or something else
Title: Re: Everdrive gb issue.
Post by: n00b on April 30, 2014, 01:40 AM
Ahhh in the video shows the 1st revision (no Power LED) - I have one with a Power LED (2nd rev.). Maybe this is the problem?
Title: Re: Everdrive gb issue.
Post by: KRIKzz on April 30, 2014, 01:41 AM
may be, i do not have 2nd rev to test
Title: Re: Everdrive gb issue.
Post by: n00b on April 30, 2014, 01:47 AM
Okay, we will check this out in the next days - stay tuned... :)

1st thought: Your GB Pocket says: DC3V; 0.7W - the second rev. says DC3V; 300mA - so there is already a slight difference regarding the wattage...
Title: Re: Everdrive gb issue.
Post by: djpannda on April 30, 2014, 04:01 AM
i have rev 2 also
Title: Re: Everdrive gb issue.
Post by: MockyLock on May 01, 2014, 09:57 AM
I don't know if it's really important in all of your issues, but keep in mind that alkaline battery are 1.5 Volts whereas lithium are 1.2 volts.
Could this very little difference be part of your problems ?
Title: Re: Everdrive gb issue.
Post by: n00b on May 01, 2014, 10:09 AM
But I have tested with "Duracell Ultra Power" (alkaline) and they have 1.5V....
Title: Re: Everdrive gb issue.
Post by: Joybit on May 02, 2014, 08:27 PM
My frontlit GameBoy Pocket is a Rev. 2 with the power LED.  As I said before, no issues so far.  That being said I'm not using cheapo batteries for once, but I plan on setting up a AA battery attachment for it.
Title: Re: Everdrive gb issue.
Post by: n00b on May 02, 2014, 10:02 PM
Someone on /vr/ chimed in with a good tip about types of batteries:

Quote
The ED cart draws a lot of current during r/w operations. You need batteries that can sustain the spikes of high load without having their voltage drop into the shitter.

Cheap alkaline AAAs won't cut it and zinc chloride "heavy duty" batteries are even worse. Energizer Titanium batteries can sustain rather high current for alkalines but I'm not sure if it's enough. Duracell Quantum are interesting in that they have a completely flat discharge curve and high capacity, but only at low current. They will tank and perform worse than standard Duracells if you put them under high load.

NiMH batteries on the other hand can deliver far more current than alkalines. You can get an amp out of any decent AAA, and you can just charge them back up after you've run them down. Pic related are what I use in my front lit CGB with an EDGB. EDIT: The pic was of Sanyo Eneloop rechargeable batteries.

Lithium metal batteries can also supply lots of current, but their voltage is over spec for the GB (1.7V) and they're expensive.

Thx for the information - but it is still a mystery to me why one ED GB works perfect and the other one not (same GB Pocket, same batteries, same SD card)... ???
Title: Re: Everdrive gb issue.
Post by: n00b on May 11, 2014, 10:38 PM
Update:

I have tested the problematical ED GB with serveral Game Boys (DMGs, Pockets, Colors), several SD cards (2 till 8 GB, low budget and brands) and several batteries and it won't work with any combination in terms of flashing new games (without SD card it works). :( It only works with GBAs and the Super Game Boy.
My other ED GB works with every testetd Game Boy and any handheld instead. So it must be a problem of the ED GB itself...

Krikzz, is there an easy way to fix it with a software update?
Title: Re: Everdrive gb issue.
Post by: KRIKzz on May 12, 2014, 08:36 PM
Update:

I have tested the problematical ED GB with serveral Game Boys (DMGs, Pockets, Colors), several SD cards (2 till 8 GB, low budget and brands) and several batteries and it won't work with any combination in terms of flashing new games (without SD card it works). :( It only works with GBAs and the Super Game Boy.
My other ED GB works with every testetd Game Boy and any handheld instead. So it must be a problem of the ED GB itself...

Krikzz, is there an easy way to fix it with a software update?

You can send it to me, it is the only way
Title: Re: Everdrive gb issue.
Post by: Traveller on May 25, 2014, 11:26 AM
My pocket is having similar problems. It seems to work for awhile, and then it looks as though the batteries have been drained, the power light isn't as bright and the contrast goes funny and the games won't load. These were fresh brand batteries, I have just put in some other ones and will see how they go.

I will try the high powered lithium brand batteries too.
Title: Re: Everdrive gb issue.
Post by: xadox on July 01, 2014, 08:49 PM
Same for me with a brand new EDGB v1.2 SN0443 while using Game Boy Pocket (DC3V 300mA).
Using two 1.2V lithium or a power adaptor the contrast is changing a lot. Flashing is not working, instead a reboot is done.
Measuring with a multimeter is showing 1,29V for the lithium ones and 2,6 - 2,89V for the power adaptor.

Using EDGB w/o a MiniSD Card the last flashed game is working in the the Pocket.

While using two fresh Alcaline batteries the EDGB is working also fine with MiniSD card in the Pocket.
Measuring the Alcaline ist showing 1,56V.

Is the problem realy depending on the Volt difference?
Title: Re: Everdrive gb issue.
Post by: Asaki on July 02, 2014, 04:18 AM
1st version Pocket here (no power light), MiC. Everything's been mostly okay, though I did have one attempt where it was flashing a new game, and while erasing, the screen went out...but then it came back and finished writing.

Batteries are NiMH, 1.2v, although upon closer inspection, they are not a matching pair. One is 850 mAh, the other is 700. I'll have to find a matching set and try it some more, though I don't like to flash too often (due to the nature of limited writes).
Title: Re: Everdrive gb issue.
Post by: MockyLock on July 02, 2014, 09:10 AM
I'm definitly not a technician, but if the Everdrive GB has to be a little picky with voltage, it may sound logical that two baterries cause issues (Everdrive will get 2.4 Volts instead of 3 volts).
Title: Re: Everdrive gb issue.
Post by: xadox on July 03, 2014, 12:27 PM
Hmm... So is there a known volt problem? Or do I have a problem with my pocket?
Title: Re: Everdrive gb issue.
Post by: Asaki on July 03, 2014, 01:15 PM
Found a matching pair (both 700 mAh), happened again.

Not a huge problem though, I have lots of other Game Boys.
Title: Re: Everdrive gb issue.
Post by: MockyLock on July 03, 2014, 03:32 PM
For sure people had some issue due to insufficient voltage.
You should try with a power supply to check if your GameBoy is faulty.
I tried my Everdrive GB on GB Color, GB BOY Color (both with alcaline cells), GBA SP (obviously with its own batery).
Never had any problem.