Hot When Powered Off

General information to do with the PlayStation 1 Hardware. Including modchips, pinouts, rare or obscure development equipment, etc.
Post Reply
User avatar
ellison
BANNED
BANNED
Posts: 28
Joined: Sep 22, 2016
I am a: NEET

Hot When Powered Off

Post by ellison » September 22nd, 2016, 1:08 am

I have a 5501 I just got off ebay and I'm just getting reacquainted with the PlayStation. When it's not in operation and plugged in, it stays fairly hot. Unplugged, the bottom of the case on the power side was 75 degrees Fahrenheit, and after ten minutes of being plugged in it went to 84 degrees. Does anyone else have this happen, or is something wrong here?

User avatar
nocash
Verified
PSX Aficionado
PSX Aficionado
Posts: 541
Joined: Nov 12, 2012
Contact:

Post by nocash » September 22nd, 2016, 7:49 am

84'F is around 30'C isn't it? That's not really hot, and that's normal (unfortunately). All Playstations are fitted with fake Power switches that can only disable the supply's DC output, but not the AC input. So the power supply will be always quite warm and waste a good bit of energy.

User avatar
~PSXLoVeR95~
Verified
Active PSXDEV User
Active PSXDEV User
Posts: 73
Joined: Sep 18, 2016
I am a: Huge lover of PS1

Post by ~PSXLoVeR95~ » September 22nd, 2016, 11:05 am

Agree with Nocash.
Expecially the 100x series. The PSU and the modbo are a little be hot when are OFF. The important is fully functioning ^^!
~ My PS Collection ~
4x SCPH-1000
2x SCPH-1001
7x SCPH-1002
1x SCPH-3000
1x SCPH-3500
1x SCPH-5000
1x SCPH-5501
1x SCPH-5502
2x SCPH-7000
2x SCPH-7002
1x SCPH-7500
1x SCPH-7501
2x SCPH-9000
1x SCPH-9002
3x SCPH-102
>>IT'S A SONY

User avatar
Shadow
Verified
Admin / PSXDEV
Admin / PSXDEV
Posts: 2670
Joined: Dec 31, 2012
PlayStation Model: H2000/5502
Discord: Shadow^PSXDEV

Post by Shadow » September 22nd, 2016, 1:31 pm

Yeah, it's normal. It stays warm all the time, even when the I/O button is OFF.
Development Console: SCPH-5502 with 8MB RAM, MM3 Modchip, PAL 60 Colour Modification (for NTSC), PSIO Switch Board, DB-9 breakout headers for both RGB and Serial output and an Xplorer with CAETLA 0.34.

PlayStation Development PC: Windows 98 SE, Pentium 3 at 400MHz, 128MB SDRAM, DTL-H2000, DTL-H2010, DTL-H201A, DTL-S2020 (with 4GB SCSI-2 HDD), 21" Sony G420, CD-R burner, 3.25" and 5.25" Floppy Diskette Drives, ZIP 100 Diskette Drive and an IBM Model M keyboard.

User avatar
ellison
BANNED
BANNED
Posts: 28
Joined: Sep 22, 2016
I am a: NEET

Post by ellison » September 22nd, 2016, 6:52 pm

Okay. Thanks for the replies, guys. I installed a switch on the AC cord from a lamp power cord like this.

http://bplampsupply.com/images/products ... _alt_0.jpg

Now I don't have to keep it unplugged to not waste power.
Last edited by ellison on September 22nd, 2016, 10:03 pm, edited 2 times in total.

likeabaus
Extreme PSXDEV User
Extreme PSXDEV User
Posts: 133
Joined: Jul 27, 2016

Post by likeabaus » September 22nd, 2016, 8:15 pm

nocash wrote:84'F is around 30'C isn't it? That's not really hot, and that's normal (unfortunately). All Playstations are fitted with fake Power switches that can only disable the supply's DC output, but not the AC input. So the power supply will be always quite warm and waste a good bit of energy.
Wow, that's the first I've heard of this. I've never noticed any psx/psone/ps1 I've owned getting warm while switched off. I guess I'm not very observant lol. Good to know though, cause normally if someone didn't know this, I would assume there's an issue with the power supply... Guess its just an engineering fail XD

User avatar
Shadow
Verified
Admin / PSXDEV
Admin / PSXDEV
Posts: 2670
Joined: Dec 31, 2012
PlayStation Model: H2000/5502
Discord: Shadow^PSXDEV

Post by Shadow » September 22nd, 2016, 9:23 pm

Typically they'd have a relay which would enable when the power button is pressed, much like a plasma TV. Problem is, it'd add to the cost of the machine which I guess wasn't Sony's intention on doing, or it could just be a design choice. The power supply in the PSX is actually overall really well designed :)
Development Console: SCPH-5502 with 8MB RAM, MM3 Modchip, PAL 60 Colour Modification (for NTSC), PSIO Switch Board, DB-9 breakout headers for both RGB and Serial output and an Xplorer with CAETLA 0.34.

PlayStation Development PC: Windows 98 SE, Pentium 3 at 400MHz, 128MB SDRAM, DTL-H2000, DTL-H2010, DTL-H201A, DTL-S2020 (with 4GB SCSI-2 HDD), 21" Sony G420, CD-R burner, 3.25" and 5.25" Floppy Diskette Drives, ZIP 100 Diskette Drive and an IBM Model M keyboard.

Post Reply

Who is online

Users browsing this forum: No registered users and 5 guests