20 Most Recent TwinMOS Technologies MP3 USB S21 256 Mb key 256 Mb MP3 Player Questions & Answers

To be honest I think your memory card has had its day and I could only suggest that you buy a genuine memory card from a trusted seller ie a local camera store or a large supermarket.
I know that the above seams harsh but I too have struggled with cheap sd cards when an a more expensive one will give far more service.

TwinMOS... • Answered on Apr 27, 2017

You have to thow it away. Sorry. But the storage on your MP3 player is corrupt. This happens alot with USB devices.. Specially Thumbrives and mp3 players.

TwinMOS... • Answered on Jan 25, 2008

No. Your Amazon library is a list to music that is already on Amazon, in other words, a list of shortcuts. You can store MP3 music you own on your computer if you buy an Apple Music Anywhere License.

Audio Players &... • Answered 3 hours ago

HI. I also have the same system..but it is in English .version .do you want me to send it to you.3_26_2012_7_30_45_am.jpg

Audio Players &... • Answered 3 days ago


Audio Players &... • Answered on Mar 28, 2021

i will scan my copy if you like

Audio Players &... • Answered on Mar 28, 2021

By looking at it it looks pretty old, I would say either that could e a protection mode signal or it could just be use and abuse and I might need to get a new one. Check your connections for pinched or touching wires and make sure you are not drawing to much current from where you have it plugged in at

Audio Players &... • Answered on Mar 28, 2021

First, check the ground connection for the body of the vehicle. If it's bad, the radio may not have enough power supply voltage for proper operation under load. Next, remove the front panel (see owner's manual) and check both it and the main unit for dirty connections. Another possibility is a fault in one of the output amplifiers is causing the shutdown. Usually, a problem here blows a fuse, and the entire unit does not work at all, but once in a while the shorted transistor or its complementary mate blows up instead of creating a full short and popping the fuse. In either case, both transistors on that output should be replaced (some designs use a sealed amplifier module with the transistors inside, in which case the module should be replaced). Figuring out which of the four amplifiers is bad requires checking the resistance of the output to both power and ground connections (done with the unit unplugged).

Audio Players &... • Answered on Mar 28, 2021

Do you mean the Philips AZ1040 portable radio with cassette player? If so, the volume control is the ring to the left of the LCD display. Turn the ring clockwise to increase the volume and counter-clockwise to lower the volume. The manual for this radio is available on the product support site: https://www.usa.philips.com/c-p/AZ1040_17/- . The current link to the manual is https://www.download.p4c.philips.com/files/a/az1040_17/az1040_17_dfu_aen.pdf . See page 10 for the volume control information. The button in front of the power slider on the top of the radio lets you turn on or off the dynamic bass boost. I hope this helps. Cindy Wells

Audio Players &... • Answered on Mar 27, 2021

Google the number on the top of it, or contact Panasonic direct, or take it to a Panasonic Service Centre. We don't sell parts. https://www.google.com/search?q=panasonic+sa-ht+340 ..

Audio Players &... • Answered on Mar 27, 2021

check with the manufacturer's website

Audio Players &... • Answered on Mar 27, 2021

Your best bet is EBAY... OR, locally, search for "Electronics Repair" and call the shops. They may have one lying around.

Audio Players &... • Answered on Mar 26, 2021

Not finding what you are looking for?
TwinMOS Technologies MP3 USB S21 256 Mb key 256 Mb MP3 Player Logo

4 questions posted

Ask a Question

Usually answered in minutes!

Popular Products

Top TwinMOS Technologies Audio Players & Recorders Experts

Muntejaya Ginting
Muntejaya Ginting

Level 3 Expert

10422 Answers

The Knight
The Knight

Level 3 Expert

76573 Answers


Level 3 Expert

85239 Answers

Are you a TwinMOS Technologies Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

View Most Popular

TwinMOS Technologies Audio Players & Recorders

  • TwinMOS Technologies Audio Players & Recorders

Most Popular Question

error memory card

  • Audio Players & Recorders