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Spot screen Maestro

2

Comments

  • Jean Drolet
    Jean Drolet Member ✭✭
    edited July 2019
  • Bill -VA3WTB
    Bill -VA3WTB Member ✭✭✭
    edited July 2019
    Jean, my comment was in regard to someone being concered that they should start doing something differently. My point was,, that it is very uncommon and yours is the only one I know of with that problem.
    Yes, any problem is one too many,,but in perspective...
  • Jean Drolet
    Jean Drolet Member ✭✭
    edited July 2019
  • Jean Drolet
    Jean Drolet Member ✭✭
    edited July 2019
  • Jean Drolet
    Jean Drolet Member ✭✭
    edited July 2019
  • Ron W4RDM
    Ron W4RDM Member ✭✭
    edited April 2020
    Looks like my Maestro has similar spots. It’s a first gen, been plugged in and on 24/7 - 365 for the last ~3 years. imageimage
  • Mike W8MM
    Mike W8MM Member ✭✭
    edited May 2020
    One of mine is on its way to Flex to sort out the same issue.

    I have 3 Maestros of the same age (very early) and 2 of them have the spots now.
  • Pat N6PAT
    Pat N6PAT Member ✭✭
    edited July 2019
    Given the pictures that Jean posted of the swollen battery I would be very reluctant to use it
  • Pat N6PAT
    Pat N6PAT Member ✭✭
    edited July 2019
    Interesting. You need to keep the internal battery charged but how do you know when it's overcharged? According to what NN4ZZ posted overcharging is the cause of swollen batteries.
  • Tim VE6SH
    Tim VE6SH Member ✭✭
    edited July 2019
    Is Al saying the internal battery is the issue or the larger Li-ion batteries used in the battery compartment? 

    Tim VE6SH
  • Pat N6PAT
    Pat N6PAT Member ✭✭
    edited July 2019
    If it's generating enough heat to leave burn marks on the screen then common sense would say not to put your face near it.

    I would think it's not a good idea to even turn it on or leave it charging until it's fixed.
  • Al_NN4ZZ
    Al_NN4ZZ Member ✭✭✭
    edited July 2019
    Hi Tim, When I had a problem with my Samsung phone battery, the tech at “Batteries Plus” said they see the swollen Li-on batteries frequently on phones, laptops and other small devices. He said leaving it plugged in continuously was the most common cause. And he noted that they can overheat and cause damage to the device, screen, etc. Even catch fire in rare cases. On a related note, he said devices that use larger Li-on batteries (drills, saws, etc) and use detachable batteries often have a smart charger system . These have a more sophisticated battery management system that monitors the charge state and shuts down when they are fully charged. The article I posted above basically confirms what I was told by the tech. I don’t have any particular knowledge about the Maestro batteries and charging system. The Batteries Plus tech suggested to disconnect my phone charger when I see the phone shows 100%. So while I do unplug it occasionally, it is not convenient or something I do all the time. FRS may have some additional input or recommendations. Regards, Al / NN4ZZ
  • Ron W4RDM
    Ron W4RDM Member ✭✭
    edited July 2019
    I know of four so far.
  • Ron W4RDM
    Ron W4RDM Member ✭✭
    edited July 2019
    It's been this way for about a year. It's on 24/7
  • Ron W4RDM
    Ron W4RDM Member ✭✭
    edited July 2019
    I have two Maestro's about the same age. Only one has the spots and it's been plugged in and on for about three years. The other one(without spots) has been plugged in but only used sparingly. 
  • Bill -VA3WTB
    Bill -VA3WTB Member ✭✭✭
    edited July 2019
    I don't know about leaving the Maestro plugged in 24/7
  • Jean Drolet
    Jean Drolet Member ✭✭
    edited July 2019
  • Jean Drolet
    Jean Drolet Member ✭✭
    edited July 2019
    But no information for 24/24 plugged

  • Jean Drolet
    Jean Drolet Member ✭✭
    edited July 2019
  • k3Tim
    k3Tim Member ✭✭✭
    edited August 2019
    First, thanks Jean for pointing this out and being the Vanguard as to the fix.

    I observed these marks on the Maestro A here but did not recognize the problem. 
    Popped the case on the Maestro, pulled the tablet and removed the battery. It had a bad gas of excess gas. This was relieved and the battery replaced. A new one is on order.

    The 'burrn marks' were simply pressure on the liquid in the LCD.  Once the pressure was relieved, the LCD panel looks fine. 

    The charging circuit is inside the Dell tablet so the origin of the problem is within, either the charger or the battery chemistry.  A Pixel 3 had the same problem and I repaired it this week (more challenging).

    Thank you for the information....

    Regards,

    k3Tim
  • Steve K9ZW
    Steve K9ZW Member ✭✭✭
    edited July 2019
    @k3tim - would you have links for the correct internal battery to share? A bit of how-to guidance would also help. Thanks and 73 Steve K9ZW Blog: http://K9ZW.wordpress.com
  • Jean Drolet
    Jean Drolet Member ✭✭
    edited August 2019
  • Jean Drolet
    Jean Drolet Member ✭✭
    edited August 2019
    https://www.youtube.com/watch?v=N6AMRy4di0s
  • k3Tim
    k3Tim Member ✭✭✭
    edited August 2019
  • kz1w
    kz1w Member ✭✭
    edited August 2019
    I've taken my Maestro apart after second Dell tablet failure, batteries both times.  The battery is right behind the lower part of the screen.  It failed (expanded, vomited, blew up, whatever,..) and distorts the screen.  In my case it destroyed other parts (SSD?) as it won't boot.
  • Jean Drolet
    Jean Drolet Member ✭✭
    edited August 2019
  • Mike W8MM
    Mike W8MM Member ✭✭
    edited August 2019
  • G4NRT
    G4NRT Member ✭✭
    edited March 2020
  • Jean Drolet
    Jean Drolet Member ✭✭
    edited January 2020
  • G4NRT
    G4NRT Member ✭✭
    edited January 2020
    Thanks Jean. I’ve ordered a battery from eBay. Hopefully it’s all I need and I’ve watched a YouTube video on replacement so I can give it a go!!

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