rayrayrayraydog Posted July 21, 2021 Share Posted July 21, 2021 (edited) Hi -- I have purchased a RetroHQ GameDrive used, and it came with a 2GB SD card already populated with ROMs. I just finished assembling a Lynx 2 build with the Bennvenn LCD kit after recapping / replacing power components. It works with the one real cartridge I have, Steel Talons. The GameDrive however only starts up displaying the INSERT GAME message, a blank black screen, or what looks like static. I also scanned the filesystem on the SD card for errors, with no improvement. Is my GameDrive busted? EDIT: This is a Lynx 2 C104342-001 Rev.2 with the BennVenn solderless v6 display: https://bennvenn.myshopify.com/collections/aftermarket-lcds/products/drop-in-lcd-kit-solderless-drop-in-pre-order-revision6 Edited July 21, 2021 by rayrayrayraydog Quote Link to comment Share on other sites More sharing options...
nyandeyanen Posted July 21, 2021 Share Posted July 21, 2021 (edited) I did have a GD go out once in a similar fashion, apparently a very rare occurrence, but it's also possible that the connection just isn't being made properly in your Lynx II. A few SD carts (including the BennVenn El Cheapo and the Lynx SD precursor to the GameDrive) needed to be moved around a bit in the cartridge slot in my Lynx II consoles in order for them to boot up. Sometimes it takes quite a few tries, probably due to aging connectors. Cleaning didn't help. The new GameDrive never had that issue in my systems, but yours might be different. Edited July 21, 2021 by nyandeyanen Post-post typo spotting Quote Link to comment Share on other sites More sharing options...
rayrayrayraydog Posted July 21, 2021 Author Share Posted July 21, 2021 @nyandeyanen I do feel quite a bit of wiggle in the cart and connector when it's inserted. I've moved it around a bit but no luck yet. Quote Link to comment Share on other sites More sharing options...
SainT Posted July 21, 2021 Share Posted July 21, 2021 Given these symptoms, if cleaning the edge connector on the cart and re-inserting a few times does not fix the problem, it is most likely a problem with the cart. The cart will boot without the memory card, so it's not related to the memory card in any way. Sorry, problems like this are rare, but carts can fail between leaving me and reaching the end user! I'm not sure if being x-ray'ed on the trip is a factor, with bit flipping in the flash, or whether it's just a physical issue. Quote Link to comment Share on other sites More sharing options...
rayrayrayraydog Posted July 21, 2021 Author Share Posted July 21, 2021 @SainT No problem. You don't have to apologize -- I'm the doofus that bought it used to save a couple bucks. Is there any particular component that commonly fails on them? With nothing left to lose, I might try to carefully peel off the backing and see if there is something obviously wrong. Quote Link to comment Share on other sites More sharing options...
rayrayrayraydog Posted July 21, 2021 Author Share Posted July 21, 2021 Okay, I've carefully removed the PCB from the case and I don't see any obvious signs of damage to any components. It's possible that this card fried when I stupidly tried the headphone jack ground on another unit before I learned how dangerous it was. I see three pins on the back of the PCB on the bottom. Are these debug pins? Is there any way I can externally try to bring the cart back to life / reflash firmware? Quote Link to comment Share on other sites More sharing options...
rayrayrayraydog Posted August 5, 2021 Author Share Posted August 5, 2021 I've tried a different flash cart which works. I can only assume that I fried it on my other Lynx board with the headphone jack ground trick (possibly sending the cart 9v) or it came to me dead. Never ever use the headphone ground trick. Oh well! If there is some component on the PCB that would have fried from this that I could replace, please let me know. Otherwise it's headed to the recycler. Quote Link to comment Share on other sites More sharing options...
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