imac 21 A1418, 820 3482 A, 1 bip 5 - 5 sec

[Noguinfor]

Hey guys,

working on this 820 3482, this on bip's 1 time 5 - 5 sec! Like how don't have rams! i try another good rams and same history... N liquid damage and components removed!

any idea ??

thanks

 

[2informaticos]

Try new BIOS.
Be sure no cracked solders on DDR slots.

 

[Noguinfor]

yes , already verified on amscoop and looks to be fine! do you have a bios for this model?? already check on vinafix and some russians foruns and i dont found! thanks

 

[2informaticos]

Medusa 2 can clean ME.
You may have general corrupted BIOS, but you can try to clean ME first.

 

[Noguinfor]

it is:

https://drive.google.com/file/d/157NtF0z5UYTC7VPxC-uMb4EtQqSU6jZi/view?usp=sharing

 

[2informaticos]

Try this as is first.
https://drive.google.com/open?id=1MmLzVmsQ40DH4v7BC6jaLToyI8qEuZzl
Report back any change.

 

[Noguinfor]

Hey,

already flashed the bios and first impression i think it's done try to boot with on ram i hear the typical sound try with 2 rams and work too!! i assembly all parts inclusive LCD and when i have all assembled we go to the begin .... =( i already disassembly and flashed the bios again 2 times with different Bios_IC and have the 1 bip 5-5 sec! i would to have a general bios with clean_me and without being my. what you think?

thanks

 

[2informaticos]

Your problem is not BIOS now.
Do you get same error beeps if RAM removed?

 

[Noguinfor]

but it was a big coincidence!! It work's on 4-5 boots! yes i have the same beeps without rams! thanks

 

[2informaticos]

Possibly cracked solders on RAM slots, or traces to CPU.
Don't you have RAM test card?

 

[Noguinfor]

Hey, i was on vacation!

i already soldered all pins on RAM SLOT! probably traces to cpu are broken!!

Can you advice me one test card to buy please ??

regard's

 

[2informaticos]

https://www.ebay.es/itm/DDR2-DDR3-D...637d399ae:m:mCZ0-evRer0GX5nas7U41PA:rk:4:pf:0

I suppose you can get it from other websites too...