Re: HP zBook 15 G5 (DA0XW2MBAG0) chip reading problems
Okay fuck this chip footprint with a flagpole. I'm looking for a replacement with SOIC8/SOP8 package, any recommendations?
aziztcf
Member
Last Activity: 10-09-2023, 08:03 PM
Joined: 03-10-2013
Location: Central Finland
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Last edited by aziztcf; 02-28-2020, 09:51 AM. -
Re: HP zBook 15 G5 (DA0XW2MBAG0) chip reading problems
I am on 1.1, trying the git version next.
After figuring out it indeed is a GigaDevice (thanks to that earlier flashrom ID) I found the datasheet, [url]https://www.gigadevice.com/datasheet/gd25b256d/[/url]
It does look like a winbond compatible one right? Flashrom doesn't seem to support it directly,.
Nah I'm just blind, GigaDevice GD25Q256D 32768 SPI
Guess it's the damn SOIC8 clip and the slightly wider footprint the problem here.
....Last edited by aziztcf; 02-16-2020, 05:34 AM.Leave a comment:
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HP zBook 15 G5 (DA0XW2MBAG0) chip reading problems
So I got this zBook G5 i need to reset BIOS password for, and I can't seem to figure out what's the deal with the flash memories here. There's three chips, 25Q128JVSQ that my cheap ass ch341 reads just fine (16MB,EC I guess?) with SOIC8 clip, 25Q80CS1G ("TBT" 1MB) read ok too. No idea what that actually is!
But then there's and the actual BIOS labeled one.
25B256DY{I or 1}G which won't play nice with my clip thanks to the different footprint I guess. Also I can only find this [URL="https://g-search1.alicdn.com/img/bao/uploaded/i4/36204002/O1CN01EUqr6s1fQxdh6bFMh_!!36204002.jpg_300x300.jpg"]chinese... -
Re: Sony Bravia KDL-40D3660 - Rebooting every 30 secs
Hmh, the voltages on balancer transformers seem fine. I measured the FETs on the DF1 board, one of them is ~20V when the set turns on but jumps to ~200V when the inverter shuts down. Losing my mind with this one..Leave a comment:
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Re: Sony Bravia KDL-40D3660 - Rebooting every 30 secs
Ok, so I think one of the lamps seem to be drawing too much current. [url]https://www.badcaps.net/forum/attachment.php?attachmentid=53965&d=1356302125[/url] shows the same series of controller that my board has. Any way to bypass this easily to see if the problems is on the balancer or DF1 inverter ps.Re: Sony Bravia KDL-40D3660 - Reboot...56302125[/url]Leave a comment:
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Re: Sony Bravia KDL-40D3660 - Rebooting every 30 secs
Sorry, the line showing about 7,5V was 6V UNREG, not 5v. Checked the caps in the PSU, all seemed fine so I'm really starting to think it's a problem with the main board.Leave a comment:
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Re: Sony Bravia KDL-40D3660 - Rebooting every 30 secs
Those were the ratings and they matched. Sorry for being little unclear. Not my first language
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Re: Sony Bravia KDL-40D3660 - Rebooting every 30 secs
12V audio, Reg 12V, stby 3.3V when in standby, nothing on audio but I guess that's cause there's no input. Back_light rises to 2.9V when screen is on, dimmer at 0.7V.Leave a comment:
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Re: Sony Bravia KDL-40D3660 - Rebooting every 30 secs
Tried it, no help.
I just noticed that the unregulated 5v coming from main board is over 7 volts. Could this indicate a problem on the BE1F-board?Leave a comment:
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Re: Sony Bravia KDL-40D3660 - Rebooting every 30 secs
Tried to connect INV_ERR to GND, no go. I'm wondering if it's supposed to be high, cause it is during normal operation, then goes to zero when the screen goes off.Leave a comment:
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Re: Sony Bravia KDL-40D3660 - Rebooting every 30 secs
The TV is usable, picture and audio work just fine. The remote seems to respond all the time too, it goes to standby.
I'm wondering why the backlight doesn't fire up when powering on if it's just about the INV_ERR signal? Or does the cpu detect it at boot and delay the next try for half an minute?...Last edited by aziztcf; 03-20-2013, 10:12 AM.Leave a comment:
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Sony Bravia KDL-40D3660 - Rebooting every 30 secs
Hi!
Just got this "broken" set with interesting problem. The screen takes about 30 seconds before it wakes up(backlight+picture ok), then works for another 30 sec or so before shutting down again. The green light stays on the entire time, then it repeats the process a few times before giving the red 10-blink error indicating "Digital FE Error" according to the service manual.
Voltage on CN6600(Main power to inverter) is steady 390 the entire time, but drops on the inverter side when the backlight and picture go black. There's an INV_ERR pin which...Last edited by aziztcf; 03-20-2013, 09:23 AM. -
Re: New Members - please post your introductions here
Hi, I'm an electronics assembler from Finland who likes to tinker with everything I can get my hands on. I've been looking for a forum like this for ages, and actually stumbled upon the front page a few times but never realized that there's such a great community behind the site!
I'm looking forward to asking the most stupid questions I can think of when I start working on my next 40" sometimes-catches-on-fire Sony Bravia!Leave a comment:
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