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Mintek Portable DVD/CD Player w - Page 3 Questions & Answers
My mintek dtv 373 d picture goes off after being on for a while the sound is still on but there is no picture
Sounds like Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.
I have no sound on TV or DVD why?
Check whether the audio is muted by accidental press at remote control button. Enter its sound menu, and check it. If muted, as you know there will be no audio output. If not muted, check the speaker/s. If found OK; check and replace the damaged component/s at its audio output section circuit board. If needy, replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/
Why won't the TV power on
Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time.
Mintek DTV-260
The Mintek DTV-260 only has a NTSC (analog) tuner. You will need to connect your RCA antenna to a digital to analog converter box to watch TV over the air. Then connect the output of the converter box to your TV.
The common converter boxes are limited to SD output. You might be able to find an HD converter box online. (With the standard converter box, the available outputs are coaxial and composite video.) The DTV-260 has a composite video port; alternatively set the TV to channel 3 or 4 and use the coaxial (RF) input on the TV.
There may be a low-power station that still broadcasts in analog. However these are rare. You will need to switch from CATV to OTA (Air) to check for one of these stations. Analog Cable has different parameters than scanning for over the air signals.
I hope this helps.
Cindy Wells
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