RGH Jasper 6751 Help

[WNYConsoles]

Got my CoolRunners in, did two Slims and a Falcon, no issues. Falcon was spot on and super fast from first test. Decided to get to the Jaspers I have here, unfortunately for me all three of them are 6751.

So here is what I did........

Two of the Jaspers are BB 512 and one is a Elite 16mb. All 6751 CB.

Dumped nands, installed CoolRunner, wiring and solder checks out 100%. Created ECC with Mutli Builder 0.3 and no boot with no green led. Created ECC with JTAG Tool, no boot but green light every 5 seconds, even for 20 minutes.

Created with Multi Builder 0.2, same results as JTAG tool. No boot, green led blinks every 5 seconds.

I have tried creating ECC's a few different ways with different tools but for the life of me I cannot get a 6751 Jasper to RGH.

I saw the post about the 680PF 50V caps, but from what I see this is for SLOW boot, not no boot, correct?

If anyone has any advice on this I would greatly appreciate it.

Thanks

 

[seanr28]

I would give the 68nF / 0.068uF Caps a go, my original BB JJasper would not boot sometimes at all and then maybe 1 in 100 attempts! fitted the 0.068uF Cap and boots every time within 5 seconds

So definatley worth ago

 

[diaboliq20]

I saw an update from Uber using your method seanr28 - think he updated the tuts with it....not sure tho

 

[WNYConsoles]

Unfortunately I do not have any in-stock, but can get them this week. Just to confirm the 68nF cap helps with general booting, not just slow booting?

I have some 220PF caps I got when I played with the CPLD when RGH was first released, could I use 1-3 on there to test?

 

[diaboliq20]

looking back - the cap was just to fix the speed of the glitch - no the actual glitch itself

edit - if it helps, THIS was the thread it was discussed in - BB Jasper with black screen

 

[WNYConsoles]

All three I have done simply will not even get into Xell, let alone anything after that. Surely I am missing something here?

 

[Akilles]

I did everything as you did the only thing that worked for me was to create the .ecc file using multi builder v0.2 (tried v0.3 was not a go) and flashing it with jtag tool. I was told of this by mike523 and it helped him too. I'm not exactly sure why it worked doing it like this but it worked.

 

[Ubergeek]

The cap required is a 68nF - NOT 680pF !

 

[WNYConsoles]

Link from the post regarding the cap is http://dk.mouser.com/ProductDetail/...GAEpiMZZMsh%2b1woXyUXj6BtxXuO3gSbXcyScbRnVck= and it says 680pf

 

[diaboliq20]

68nF is the same as 68000pF - So I think somebody posted a wrong link?

 

[Martin C]

There have been mixed results with either 680pF / 100nF / 68nF / 50nF across A and GND. However between 50-70nF is a good number to start with.

If you don't have a 50nF, then join 2 x 100nF in series.

 

[WNYConsoles]

I ordered a bunch of everything, should stock that stuff anyway but is there anything from radioshack.com I could use?

 

[Martin C]

They should have ceramic caps rated at 50 or 68nF. Just go in and ask

 

[Akilles]

The cap required is a 68nF - NOT 680pF !

I believe Martin C posted that he has had good results using 2 680pf caps if not my mistake. Anyhow I didn't use neither and its all good now

 

[WNYConsoles]

Went to radio shack, their in-store supply is limited. They didn't even know what I was talking about.

I ordered 680pf and 68nf caps online. I will report my results once received.

 

[CarolinaGamer]

Just curious did you do the donor nand command to get the ecc file?

Like this

python common/imgbuild/build.py jasper6751.bin donor_CB6750.bin common/cdxell/CD common/xell/xell-gggggg.bin

CG

 

[WNYConsoles]

Yeah, tried that with no luck. Just did it again to confirm as I have been working on a few units here.

Still same deal, sits there, green led blinks every 5 seconds, no signal on TV.

Really hope them 68nf caps make a difference otherwise I got 3 6751 Jaspers that won't glitch.

EDIT: Also gave a NAND dump to a few people on IRC and had them make ecc with same results and no it's not soldering.

 

[rockla]

Same here with 6751 its glitches sometimes but if i shutdown and wait for 15 mins its Glitches 100% no capacitors were applied.

 

[loalge]

how did you build your ecc.? I tried multiple methods and only got to black screen. Cant get to xell.

 

[WNYConsoles]

OK. Got my 68nF caps, two different types from two different distributors. Now, I have 4 Jasper 6751's here and not ONE and I mean not ONE has even glitched once with the CoolRunner. Cannot get to Xell at all, tried 3 video out types (HDMI, Component, and Composite).

I have done 5 Falcons without an issue, haven't done any Zypher's simply because they don't deserve a CoolRunner (RROD Anyone?).

My soldering is spot on, that I am positive of. You can say all day "soldering" "its always soldering", yeah well look at the dozen + images I have online of my soldering and the 12+ JTAG tutorials I have on YouTube then tell me its soldering. I have testing conductivity 10x over. I have created the ECC with 5 different tools (JTAG Tool, Phython Manually, Multi Builder 0.2, MultiBuilder 0.3, and GGBuild), none have worked. Also done the donor nand with 6750.

I have installed the 68nF Capacitors in single and double (one on RST), nothing. The CoolRunner just sits there and blinks green LED.

Now, I know I am a newer VIP member but I know what I am doing. I have excellent soldering skills and am totally confident in my skills to perform this type of install. As I said, I have done 5 Falcons without a hiccup and I honestly feel that Xecuter needs to look into this issue and fix it.

I have spent $250 on 12 CoolRunners, plus another $50 in CoolRunner accessories so I am not a happy camper today. Not to mention a Slim HDMI port dying on me after installing a CoolRunner, something isn't right.

EDIT: 3/4 Jasper 6751 are BB Arcades, one is a Elite 16mb nand. I originally started with BB units and once I ran into these issues went right to the Elite as I figured the 16mb nand would be a smoother install but all 4 have the same issue.