BB Jasper Slow Boot Glitch fix with TX cool runner

[Pazoozoo]

I have a 256mb BB Jasper that glitches on first try every time without any capacitors added and another 512 BB Jasper that refuses to boot in under 2 mins both have CB 6750.
Regarding the 512mb Jasper, it being outside of the case on my table with no fans or hdd booted constantly at the second try but after assembling the console it usually take a dozen or more tries until it glitches.

I just ordered some 0.068uF capacitors from mouser and will report back when they arrive if they improved boot times for my 512mb jasper.

Gonna do a Slim this weekend, hoping it will be as pleasant as my first 256mb Jasper.

 

[Ubergeek]

I believe the CPU_PLL_BYPASS benefits from a controlled boost for signal purposes. The cap offers this by having it on the line.

I also believe Sean got the idea from another site, so waiting for him to come clean....

Yes this was posted ages ago on xboxhacker

what they got wrong was the value.

68nF - 100nF is the sweet spot.

not 680pF

 

[DivinityCycle]

I had a very busy weekend with modding I posted a different thread about my horrible Jasper experiences. The third box I tried to work on was actually a Falcon, which worked 100% OK first try. My 64MB Jasper glitched like 3 times out of maybe 50 attempts. Given this thread, I figured it couldn't hurt to try.

The closest I could find nearby was a 0.047uF ceramic disk capacitor at my local RadioShack. Like $1.50 for two, which I know is a terrible price for what they are, but eh I was impatient. Whereas before the system basically never successfully glitched, now it glitches after between 1 and 3 resets (like 2 minutes tops), and my FreeBoot image is working out just fine

I know that isn't quite the right cap, but I figured it'd be worth noting that it can work. You guys are awesome!!!

 

[DeeX]

I too have a slow to glitch Jasper (16).
I am going to pick up some of these caps today, I hope it helps.

Strange this is happening.

Thx for the info!

 

[Old Reprobate]

Same here. I have a Jasper 256 BB with very slow boot times. I ordered the caps and will give it a go. It was my first RGH console I had done, I'm glad I read this thread before I went to re-soldering everything, Thank you everyone.

The console boots after about 3-5 minutes as it sits now, we'll see how well the caps improve that time.

 

[Pazoozoo]

OK just added the 68nF cap between pad A and GND on my 512 BB Jasper and attempted to boot Freeboot with all my peripherals attached to the console (Internal HDD, Wired Controller etc) and console booted on first attempt every time but then froze in the middle of the logo animation(every time) until I switched my controller to the front usb.

Now the console doesnt freeze anymore but every few reboots it still takes a large amount of time to glitch, naturally I have moved my wires away from the coils. It seems the capacitor trick helps but these Jaspers are still a pain.

 

[Martin C]

Try 50nf - (two 100nF caps in series if you don't have one that low).

 

[oic989]

Just wanted to add my hat to the ring on this. I just added the recommended cap to my jasper and it boots really nicely now.

Previously it'd take 1-3 minutes to glitch and start. Coming up in in less than 15 seconds now.

 

[squigglyrulez]

Mouser.com

http://dk.mouser.com/ProductDetail/...GAEpiMZZMsh%2b1woXyUXj6BtxXuO3gSbXcyScbRnVck=

I believe they have stores in the US

Thank you for finding this location and product. I installed it today along with rerouting my wires (as indicated by Westbox...and updated in the PHAT guide) on my BB512 Jasper and it glitches 9 out of 10 times within 1 minute. Before it would take 15 minutes or more and at most 38 minutes to glitch.

I got the capacitor within 2 days of order, so very fast and reliable company.

Thank you EVERYONE for contributing to resolve this issue. I hope that it works the same for the rest of you.

 

[keith6625]

can't wait to try this on my jasper my coolrunner was put on hold per the wife she thinks kids need x-mass more lol <----J/K (they need more games lol ) anyway have don't a few slims for my friends around here haven't got my hands on a jasper yet but i have the CAP's when i do now thanks to you guys/girls thanks for the hard work and smarts

 

[Grale]

Just wanted to add my hat to the ring on this. I just added the recommended cap to my jasper and it boots really nicely now.

Previously it'd take 1-3 minutes to glitch and start. Coming up in in less than 15 seconds now.

Mine also was taking a long time to glitch. Added the recommended cap and now it's instant! Very very good results with my 256 Jasper.

I have however found sometimes it won't boot at all and just sits there DVD spinning just red light on coolrunner. I find if it doesn't boot on first attempt it won't start. Not a problem as 9/10 times it boots within a few seconds.

 

[Pazoozoo]

OK after a bit more testing it seems my 512 BB Jasper will boot instantly every time with the added 68nF cap if I don't have any USB connected to the console. as soon as I connect a controller or DOK the console acts up and boots after a couple of minutes, disconnect USB and viola the console boots instantly every time and functions normally.

@Matrin you suggest I place a 50nF cap, unfortunately I only got 68nF caps from my last order from mouser, i can try a 34nF by connecting two 68 in a series but I wonder what is the connection between the USB and the glitch time, perhaps its power source related and I need to use an alternate 3.3v source for the CoolRunner?

 

[splatem]

Has anyone tried this cap fix on a Slim, adding a 68nf capacitor inline on the CPU_RST wire?

 

[copota]

I recently finished glitching my Jasper 512MB. CoolRunner with QSB's.

Everything appeared to go smoothly, and the box glitched. However, at first it appeared the mod was useless.

My 360 would fail to boot about one in three times. When it did boot, it would take anywhere between 30 seconds to two minutes, plus it would either freeze at the splash, or freeze 5 minutes after boot.

At first I figured my novice soldering skills were the culprit. I flashed and re-flashed different builds, had my wiring arranged so it avoided running directly over the coils. NOTHING helped.

Then I read up on the capacitor fix. Unfortunately I did not have a 68nf capacitor. Though, I did have a 100nf capacitor that came with a glitchboard I bought off of E-Bay. I never used that board, since I found out about the CoolRunner. Though, I guess it was useful purchase after all just for the capacitors I received.

Anyhow, I soldered in the 100nf capacitor, and viola, the damn 360 boots almost instantaneously. I booted nearly 20 times, and NOT ONE FAILED BOOT. Plus, I left my 360 running with the dash for over an hour. When I came to check on it, it was still responsive.

Before the capacitor fix, I was lucky to be in the dash for 5 minutes before it froze.

 

[dayjo43]

I have a Jasper 16mb cb6750 that I installed the QSB's into. It glitched once after a long time of waiting but I wasn't ready and missed the fuse sets :facepalm:

It wouldn't glitch after that first time no matter how I routed the wires and I was sure my soldering was spot on. (Currently only POST_OUT1 is routed through the suggested hole, PLL_BYPASS and CPU_RST are routed round the edge of the board as suggested by cypher21)

I've had these issues as well, also seperated the wires. I had an even better result when not all 3 wires went through the same hole, i only let yellow go through the hole and blue and green over the top of the pcb (or bottom in case of the pic)

I've used a 0.068uF/68nF Greencap Metallised Polyester Capacitor (my local supplier doesn't carry ceramic versions at this rating) and now it boots into xell after 4 or 5 secs, and sometimes instantly.

I might add another inline on CPU_RST as suggested by Martin C, see if that improves my boot times.

Cap numbering is like resistor numbering.

Three digits.

1st two digits is the number in pF
3rd digit is the number of zeroes.

so 683 is 68 000, so 68nF as already indicated.

A 681 is what you were probably after.

As I'd said before, a 680pF between the two points you have yours on and a 680pF in line with CPU_RST seems to work extremely well for me.

So a Big thanks to all of you who share this information with us after banging your head against a wall for hours so we don't have to :smile:

 

[beastyX]

I'm hoping this fix will work for a non booting Zephyr, if i had hair i'd have pulled it all out today trying to get this thing working. I'll update tomorrow once i've picked up some caps.

 

[beastyX]

I'm hoping this fix will work for a non booting Zephyr, if i had hair i'd have pulled it all out today trying to get this thing working. I'll update tomorrow once i've picked up some caps.

No luck on this zephyr, ive had it boot to xell maybe twice in about 100 attempts and the cap is making no difference at all.

 

[ccfman2004]

It looks like Team X is adding the 683 capacitor to the CoolRunner install kits. I ordered several of them and each one came with that capacitor.

Let me get this straight. I only need the capacitor if I am having issues with inconsistent booting?

 

[BL4K3Y]

The cap is only used on Jasper boards for now and yes, it helps consoles with inconsistent/no booting issues.

 

[caius]

I succesfully installed the Xecuter Coolrunner into my Jasper 512 MB and CB 6751, it glitches very quickly, in few seconds (2-3 seconds on every boot of Xell and Dash).

So, capacitor or no capacitor, this is the question?

I don't have a 68nf film capacitor, I could try a simple ceramic 100nF.What do you think about?