Why does Dodonpachi-DOJ PCB have metallic case?

[PC Engine Fan X!]

My question is this:

Why did Cave release it's third Donpachi sequel, Dodonpachi-DOJ PCB, with a metallic case covering the entire PCB itself? (If you recall, the later arcade PCB releases of Ketsui & ESPgaluda PCBs did not have the cool metallic case covering of the former...but could've easily done so.) ^_~

The cool plasticky encased CPS2 "A & B" boardset comes to mind if you might recall of similair released arcade PCBs in same format...I think it would've ace if Cave did release Ketsui & ESPgaluda with metallic cases as well...what do you think of that (assuming that they did if productional costs were such a "non-issue")?

Could it be that Cave wanted to do some thing special for this newest powered arcade motherboard debut with a "let's go all-out" in producing such cool shmup PCB case cover (at the current time)?

Of course, wouldn't that ramp up "production costs" to manufacture such extravagant arcade PCB metallic case coverings? Sure, such arcade PCBs aren't exactly mass-produced items to purchase at your local convienence store...hence the sky-high high retail prices upon debut release to the Japanese arcade industry..... ^_~

Does Cave wish to produce such "International Versions" of it's current arcade PCB offerings (i.e -- presented in all-English language)? It has been said that Dangun Feveron's opposite counterpart PCB, Fever SOS, was the very last of the old Cave PGM-based PCBs to have an "International Version" distinction.

PC Engine Fan X! ^_~

[CIT]

My guess is that they had some problems with the cooling, as a fan is mounted inside the case. They presumably got that issue sorted out with the later games on that hardware.

[jpj]

Why did Cave release it's third Donpachi sequel, Dodonpachi-DOJ PCB, with a metallic case covering the entire PCB itself?

because the game is so evil it needs a protective case to stop people beating the shit out of it!

[neorichieb1971]

Why did Cave release it's third Donpachi sequel, Dodonpachi-DOJ PCB, with a metallic case covering the entire PCB itself?

because the game is so evil it needs a protective case to stop people beating the shit out of it!

Its funny when you think something and someone goes and posts it for you

[Dave_K.]

I have a DDPDOJ PCB without the case, and have run it all day long without any problems. So my guess is it has more to with the seal/protection than about cooling.

[eretsua]

i'm guessing cooling issues. computer-like devices such as jamma-pcb are very sensitive to overheating which can cause a permanent, irreparable malfunction to the board. also, considering it's intended to be mounted inside a cabinet there is not much need for outer protection needed as that is provided by the cabinet itself. so i'm guessing there was not much incentive to sort out the cooling issues.

eretsua

[rtw]

The case requires that the PCB gets a cooling fan but the fan is only required if there is a case! However if the seal is broken no support is given.

Newer PCB's do not have the case and fan but the chips have been sanded down.

So you can take all your DOJ out of their cases. The hardware is exactly the same.

rtw

[Dave_K.]

The case requires that the PCB gets a cooling fan but the fan is only required if there is a case! However if the seal is broken no support is given.

Newer PCB's do not have the case and fan but the chips have been sanded down.

So you can take all your DOJ out of their cases. The hardware is exactly the same.

rtw

Thanks for the clarification rtw, this makes more sense.

I might suggest people remove them from the case at least for a good cleaning, look at the typical board. Yuck!

[mrkotfw]

Yuck! How would you clean all that mess?

As much as I would hate to remove the case, I think I'll have to because I usually try to fit all my games inside a anti-static bag.

By the way, what is that weird PSU under the black one? Why do I have two? Could it be that my cab was used for a Sega Model 1/2 system?

[nem]

When has encasing anything helped in keeping it cool?

Anyway, for this reason I wouldn't keep any PCBs in antistatic bags when they're in use. Atleast not the ones that run hot.

[Herr Schatten]

Moved to Hardware.

[zakk]

Yuck! How would you clean all that mess?

As much as I would hate to remove the case, I think I'll have to because I usually try to fit all my games inside a anti-static bag.

By the way, what is that weird PSU under the black one? Why do I have two? Could it be that my cab was used for a Sega Model 1/2 system?

You better be careful with that. Plenty of boards amplifier sections get hot enough that they could melt plastic over some extended playtime.

Not to mention it sort of traps the heat inside.

[rtw]

YAs much as I would hate to remove the case, I think I'll have to because I usually try to fit all my games inside a anti-static bag.

Do not run your PCB inside a plastic bag! It traps the heat leading to the components failing earlier than expected and some parts can get so hot and melt the plastic.

rtw

[mrkotfw]

Is there any other better alternative to my method other than bolting the PCB onto the board?

I was thinking of making a thin wooden box with a couple of small PC fans on each side running. Would that help?

[brumma]

Is there any other better alternative to my method other than bolting the PCB onto the board?

I was thinking of making a thin wooden box with a couple of small PC fans on each side running. Would that help?

Hi Piratero,

Actually, that's what the PCB feet and wooden boards are designed for. Using the feet allows enough air to ventilate around the board while preventing it from resting on any sensitive components. The wooden board is there for the exact purpose you mention--screwing the PCB feet to the board. You only need 4 feet per PCB. I bought a few sets off of eBay for a total cost incl. shipping of about $5. Also, they are always included with new Cave kits, so you definitely should have some with your Espy II. Use 'em!!!