Yes, you can cut the chip out too. thnx, jeff. To be clear, 'applied heat' means using a high temp heat gun. I really do not recommend anyone performing this repair unless he/she has seen/done surface mount device soldering by hand. good luck! chiko PS my board was the dsk6711 --- Jeff Brower <> wrote: > Chiko- > > > I had the same problem, > > my level shifters were damaged, dunno about yours. > > > > so i had to order the level shifters which are between > > the pins and cpu, and swap them out. they are hard to > > remove and resolder by hand, but possible. > > > > i used expensive polymide tape to shield all other > > components, then applied heat to remove the level > > shifter chip. > > Hey too much work. Another option is to use a SHARP > exacto knife to GENTLY, SLOWLY > cut the pins. Then you can easily clear the pads with a > fine-tip soldering iron. Be > patient when cutting, use a slow gentle "sawing" motion > until the blade goes through > the pins, otherwise you can damage a pad. > > Jeff Brower > system engineer > Signalogic > > applied some liquid > > flux on the footprints of the old chip. > > > > then aligned the new shifter chip in place and held > > it there with pressure from the top. > > > > took a fine solder tip and soldered pins on all > > four corners, then remaining pins. > > > > anyways, difficult to do if you have not seen it done > > before. Best is to find someone whom has done this > > kind of work before to help you, IF this is your > > prob. > > > > chiko > > > > --- akhifra <> wrote: > > > Hello, > > > > > > I wrote a program for communication between the 6711 > > > DSK's MCBSP's > > > and some RF transceivers. The code by itself was > working > > > fine, I > > > was testing it on a logic analyzer. I designed a > buffer > > > circuit to > > > attenuate the 3.3V serial outputs of the MCBSP and > add > > > some DC bias > > > to it. I was testing the setup when I noticed that I > was > > > no longer > > > getting any valid clock or serial data signals out of > the > > > MCBSP0 any > > > more. This is using the same program that I had > verified > > > the other > > > night. The clock output of the MCBSP1 is only 1V > peak to > > > peak. I > > > can't get a clock out of MCBSP0. > > > > > > I checked the 3.3V and 5V signals on the daughtercard > > > connector, > > > they are fine. The CheckDSK tool in the GEL menu of > CCS > > > tells me > > > that the DSK is fine. > > > > > > Is there a posibility that I may have blown something > on > > > the board? > > > I don't see what I could have blown since I wasn't > > > feeding anything > > > into the daughtercard connector. I did connect the > > > ground of the > > > connector to the ground of my DC power supply though, > but > > > I don't > > > see how that could have done anything harmful. > > > > > > Does anyone know of any ways to pinpoint the problem? > > > > > > Fraidun __________________________________ |