My T4 is very hot to touch - top rear left hand side.
Is this normal? Is it likely to catch fire?
Does it have a thermal cut out switch?
Any help will be much appreciated.
Thank you
Mike
T4 hot to touch
Re: T4 hot to touch
Many T4s suffer failure of the voltage regulators feeding the tuners which are located top rear LHS.
The heat is relatively normal but it can breakdown the thermal cement which then damages the pcb. You will need to open the unit to inspect for damage to be sure. If any signs of damage are visible, repair should be done urgently.
If no damage is evident then extra cooling is a wise investment. The technically skilled might fit a bigger heatsink but for mere mortals a USB fan blowing into the area is a crude option. Noise may be a problem.
There's a detailed discussion here of the problem.
Turn off the power, unplug and wait at least 10 minutes before opening the box to ensure your safety.
__________________________________
Paul
Beyonwiz T4, 2 x U4: FW - 19.3 20211010
Samsung QA85Q80BAWXXY 4K TV
Samsung QA65Q80TAWXXY 4K TV
Samsung HW Q800BXY soundbar
OverlayHD 1.70, IceTV, Foxtel IQ4
2 x Win7 PCs, 2 x Win10 PCs
Denon AVR -X2400H
Paul
Beyonwiz T4, 2 x U4: FW - 19.3 20211010
Samsung QA85Q80BAWXXY 4K TV
Samsung QA65Q80TAWXXY 4K TV
Samsung HW Q800BXY soundbar
OverlayHD 1.70, IceTV, Foxtel IQ4
2 x Win7 PCs, 2 x Win10 PCs
Denon AVR -X2400H
Re: T4 hot to touch
Thank you for your very prompt reply Paul.
I will open it up and inspect it as you suggest.
Regards
Mike
I will open it up and inspect it as you suggest.
Regards
Mike
Re: T4 hot to touch
Just on the heat issue.
It is normal for that area to be hot. The tuners use quite a bit of power and put out some heat themselves, plus the heat from the regulators. You should be able to hold your hand on the case in that area comfortably. If you can't then there is some problem.
The tuner posts themselves can get hotter than that again, and can be uncomfortable to hold your finger on.
No matter how big the heatsinks on the regulators are, the T4's case will still get just as hot, since the heatsinks will be pouring off just as much energy. Paul_oz53's suggestion of a fan is the only thing that will stop the case/tuners temperature from rising too high.
However, the larger heatsinks will serve to keep the regulators cooler, and also slow down the breakdown of the thermal paste compound too. This can serve to extend the life of the T4, especially if the original thermal paste is replaced with something more durable.
It is normal for that area to be hot. The tuners use quite a bit of power and put out some heat themselves, plus the heat from the regulators. You should be able to hold your hand on the case in that area comfortably. If you can't then there is some problem.
The tuner posts themselves can get hotter than that again, and can be uncomfortable to hold your finger on.
No matter how big the heatsinks on the regulators are, the T4's case will still get just as hot, since the heatsinks will be pouring off just as much energy. Paul_oz53's suggestion of a fan is the only thing that will stop the case/tuners temperature from rising too high.
However, the larger heatsinks will serve to keep the regulators cooler, and also slow down the breakdown of the thermal paste compound too. This can serve to extend the life of the T4, especially if the original thermal paste is replaced with something more durable.
Logitech Harmony Ultimate+Elite RCs
Beyonwiz T2/3/U4/V2, DP-S1 PVRs
Denon AVR-X3400h, LG OLED65C7T TV
QNAP TS-410 NAS, Centos File Server (Hosted under KVM)
Ubiquiti UniFi Managed LAN/WLAN, Draytek Vigor130/Asus RT-AC86U Internet
Pixel 4,5&6, iPad 3 Mobile Devices
Beyonwiz T2/3/U4/V2, DP-S1 PVRs
Denon AVR-X3400h, LG OLED65C7T TV
QNAP TS-410 NAS, Centos File Server (Hosted under KVM)
Ubiquiti UniFi Managed LAN/WLAN, Draytek Vigor130/Asus RT-AC86U Internet
Pixel 4,5&6, iPad 3 Mobile Devices
Re: T4 hot to touch
If your antenna or flylead has a short, the tuners will run hotter than normal. You are also likely to see reception issues.
