Hi Kathy, Is it possible you had a bad solder joint on that board that made the AVR appear dead? Regards, Les. On 17 Apr 2006 at 17:42, Kathy Quinlan wrote: > Russell Shaw wrote: > > Kathy Quinlan wrote: > >> Hi all, > >> > >> Well I am pissed, I had a batch of boards I built, one did not work, > >> would not go into program mode :( > >> > >> I tried everything, and in desperation replaced the AVR chip, low and > >> behold it worked :( > >> > >> So I was shipped a dead Mega128 :( wonder how many others are on the tray :( > >> > >> (Yes I use all antistatic precautions, wrist strap, hot air Iron, never > >> had a dead AVR on delivery before, and this is the first batch of -AU > >> parts (lead free)) > > > > I had a "dead" avr once, but figured out the oscillator amplifier had > > extra low gain and the crystal wouldn't work. Applying an external > > clock made it work. > > This is a Mega 128 in factory default internal Osc (I assume it is > internal osc). > > All the others worked well, and my default fuse settings (which I set > before programming (un check CKOPT, move from M103 compat etc) > > > > -- > Regards, > > Kat. > --------------------------------------------------------------- > K.A.Q. Electronics Website: www.kaqelectronics.dyndns.org > IM: Yahoo: PinkyDwaggy MSN: katinka@kaqelectronics.dyndns.org > For Everything Electronics Phone: 0419 923 731 > --------------------------------------------------------------- > > > -- > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.1.385 / Virus Database: 268.4.2/314 - Release Date: 16/04/2006 > > > > Yahoo! Groups Links > > > > > > ------------------------------------------------------------- Les Grant. VK2KYJ. Phone: 02 9896 7150 Fax: 02 9896 7153 Grantronics Pty Ltd Int'l: +612 9896 7150, +612 9896 7153 ABN 46 070 123 643 PO Box 275, Wentworthville. NSW. 2145. Australia. http://www.grantronics.com.au mailto:info@grantronics.com.au Microcontroller Hardware and Software development: Atmel AVR - C, ASM, Digital and analogue ------------------------------------------------------------- o ImageCraft AVR, TI, Motorola and ARM Windows-hosted C compilers o ELNEC Device Programmers (E)EPROMs, Flash, Micros, PLDs o CAN-BUS Hardware and Software from LAWICEL o Logical Systems Programming, Prototyping & Production Adaptors o Cleverscope USB oscilloscopes -------------------------------------------------------------
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Re: [AVR-Chat] Dead Mega128
2006-04-28 by Les Grant
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