I was in need of a philips VAM1202/21 laser unit, but that is quite rare and expensive to come by, so decided to transplant the little PCB to a VAM1202/12 which has (supposedly) the same laser unit but the /12 has on board laser driver circuit, /21 does not have this, break out cable is also different. So the transplant was successfull, but the laser current trimmer was set for the old laser, after the transplantation the new pickup was not much better, in terms of reading discs. I added a little more current to the laser and after that it read the cds well, but now I'm unsure if I'm overstress the laser diode. I found the service manual of the philips CDM12.1 which is a close relative to the VAM1202/12, the manual says 4-6V and 60-90mA supply for the laser, but after installation I only could measure 2V on the laser, and the current was 160mA ,that's quite far from the "ideal" but mine is a VAM the manual is for the CDM. How can I determine the optimal laser current? By the way the CD player is an USHER CD100, and has a TDA1300T as laser driver/amplifier
Just wind it up til it works, if it fails, youll know something went wrong
Ha! Look the new guy!
The thing is the CD player is not mine, and they are actually paying for the service, so a premature laser death isn't looking good in my CV... it seems the things are settled now, I was able to set a laser level that is up to specs, and reads the cds good as well, so I think that will do the job.
justin: I turned my Cine9 on to compare and it was almost silent compared to the now 2.21 909... I compared the flashed 909 to my other 3.12 909 and there was no audible difference. Any idea whats going on there? I confirmed the flashed 909 was version 2.21
Oct 18, 2022 10:59:04 GMT -5
justin: I managed to flash one of my two 3.12 909s with the Cine221.bin and there was no audible improvement (still rrally loud)
Oct 18, 2022 10:57:16 GMT -5
justin: Any help is appreciated. Thanks!
Oct 17, 2022 18:32:56 GMT -5
justin: I tried connecting with and without the jumper and the problem persists. I have confirmed the baudrate and projector address. I also confirmed the com ports exist in device manager. OS is XP SP2
Oct 17, 2022 18:32:41 GMT -5
justin: Hello I am trying to flash one of my working 909s with the Cine221 firmware bin file and the Barco comms. link program keeps returning "No acknowledge". I followed hulios guide and have given up. I am using a desktop PC that has RS232 on the motherboard
Oct 17, 2022 18:31:10 GMT -5
nodols: Checked CPU doesn't give power to secondary CPU any idea what seems to be problem?
Jun 13, 2022 22:22:51 GMT -5
nodols: Repairing this Denon AVR 5800 dead to the world. checked fuse and power supply seems to be okay.
Jun 13, 2022 22:20:00 GMT -5
julio: Hello, someone who can share the latest firmware update for the pioneer sc-lx56 please, I would greatly appreciate it, regards.
May 19, 2022 16:01:07 GMT -5
jadi: Good afternoon everyone. I need help with CY920 Error on screen. Denon AVR x7200wa. What does it mean and how can I fix it? Tried reset and reboot but massage reappeared. Thanks
Apr 18, 2022 11:12:11 GMT -5
nashou: How is everyone doing?
Jan 31, 2022 23:15:49 GMT -5
nashou: Haavnt been here for a while!!!
Jan 31, 2022 23:15:42 GMT -5
dinotech: Hi Guys... my Pioneer VSX-D1S is stuck in standby mode. resetting the amp didnt work. any help in getting it running is most appreciated.
Jan 3, 2022 2:15:50 GMT -5
ali: i need help about onkyo txnr626 board no bchdm 1357 2 i buy a month ago dead i found something that a capistor number c8901 16v 100uf is missing plz guide me
Jan 1, 2022 12:16:18 GMT -5
ali: i am new in electronics feild
Jan 1, 2022 12:08:23 GMT -5
docsss: Hi, HELP ! I really need firmware DSP2 Q3401 for ONKYO TX-NR3007 . [email protected]
Aug 29, 2021 11:47:32 GMT -5
timorenga: Gracias por aceptarme como miembro del foro, Estoy buscando manual de servicio para Denon AVR4310CI si alguien lo tiene se agradecería mucho que lo comparta Gracias
Jul 17, 2021 20:07:03 GMT -5