Hi Leonard That one is a very valuable tip I would never have thougt of that if you did not tell me. I must confess I ACTUALLY CHANGED TUA01 and was afraid I had changed the wrong one. I will look for coolant leaks and if I do not find any will try to look for the service manual, as it is impossible to work further on this set without it. Thanks a lot, you have a great day Jorge Jorge Camboni, GY Electronics, Richardson, TX At 10:27 a.m. 23/10/03 -0400, you wrote: >Jorge, > >Better look for coolant very carefully. I have one in the shop right now >that started with exactly that symptom then died. Coolant leak onto the >signal board...not much but it does not take much. Ask if the set was moved >recently. > >The signal board for these is NLA, BTW. If it is not repairable have the >cust talk to mit cust relations. > >The main tuner is usually the longer one which has stereo on most dual tuner >sets. In this case it is so and the main is tua01 part #295p482010 generic >tupe eng26801d. > >Leonard G. Caillouet >Electronics World >Gainesville, FL >352-332-5608 >352-332-5668 (fax) > > >----- Original Message ----- >From: "Jorge Camboni" <geo@xxxxxxxxxxxxx> >To: <techassist@xxxxxxxxxxxxx> >Sent: Thursday, October 23, 2003 4:37 AM >Subject: [TechAssist] MITSUBISHI VS-60603 VIDEO AND SYNC PROBLEMS > > > >I am working with this set at the customer's home >The main problem is a video distortion and almost >lack Y component, just like older Mitsubishi sets using >the (in)famous pip board. But this one does not have a PIP >daughterboard, actually, its PIP works perfect, and the auxiliar >inputs work perfectly as well, the problem only shows up at >ANT A and ANT B, main picture, you can set the PIP to either >antenna input or connect a DVD to aux inputs and the signal >quality is perfect..either the main or the PIP picture. > So I deducted one of the 2 tuners was bad >(IF and video detection seemed to be inside the tuners) but >I DO NOT HAVE THE SCHEMATIC, AND CAN NOT TELL WICH >ONE IS THE MAIN TUNER just by looking at it. >After much doubting I decided to connect the customer's cable >box through AUX 1 and let them (almost) happy, watching their >favourite programs, while they wait for the definite solution. >Can anybody help me please taking a look at the schematics >and telling me which one is the main tuner, the one with the >Sony audio decoder inside or the other.. (think they are >U01A and U01B) or give me a tip on this problem, it might >even be a video switching problem. >TIA, Jorge > > > >Jorge Camboni, GY Electronics, Richardson, TX > >**************************************************************************** >* >Classifieds! Buy or Sell! >http://sell.tech-assist.org >The Tech Address Book: >http://www.tech-assist.org/secure/tip/contact.htm >Add a Repair Tip Here, or Change/Remove your Email Address: >http://www.tech-assist.org/secure/tip/main.htm >Lost Password: >http://www.tech-assist.org and select "Lost your Login Info?". >Email Archives: >//www.freelists.org/archives/techassist/ > > >***************************************************************************** >Classifieds! Buy or Sell! >http://sell.tech-assist.org >The Tech Address Book: >http://www.tech-assist.org/secure/tip/contact.htm >Add a Repair Tip Here, or Change/Remove your Email Address: >http://www.tech-assist.org/secure/tip/main.htm >Lost Password: >http://www.tech-assist.org and select "Lost your Login Info?". >Email Archives: >//www.freelists.org/archives/techassist/ Jorge Camboni, GY Electronics, Richardson, TX ***************************************************************************** Classifieds! Buy or Sell! http://sell.tech-assist.org The Tech Address Book: http://www.tech-assist.org/secure/tip/contact.htm Add a Repair Tip Here, or Change/Remove your Email Address: http://www.tech-assist.org/secure/tip/main.htm Lost Password: http://www.tech-assist.org and select "Lost your Login Info?". Email Archives: //www.freelists.org/archives/techassist/