The reason why the whole screen of the LED unit board is not bright or dark

LED cell boards fall into two categories. The indoor unit board is generally referred to as a three-in-one surface sticker; outdoor and semi-outdoors are generally referred to as modules. The characteristics of the indoor surface paste: high image clarity, rich colors, lack of high prices; outdoor and semi-outdoor module cell board features: high brightness, waterproof, rich colors, the lack of installation requires technical guidance. What are the reasons why the whole screen of the LED display unit board is not bright or dark?

1. Visually inspect the power supply cable, the 26P cable between the unit boards, and the power module indicator.

2, using a multimeter to measure the normal voltage of the unit board, and then measure the power module voltage output is normal, if not, then determine the power module is bad.

3, measuring the power module voltage is low, adjust the fine-tuning (that is, the power module near the pilot light at the fine-tuning) so that the voltage reaches the standard.

Potassium Tetroxalate

Potassium Tetra oxalate another name is Potassium Trihydrogen Dioxalate, PTO .It is white crystals,soluble in water, slightly soluble in ethanol, produced by excess Oxalic Acid and potassium carbonate or potassium chloride and other potassium salts.The commonly crystal size include 0.1mm - 0.8 mm, 0.5 m -2.17 mm, 0.5 mm- 3 mm,2mm-4mm, 2 mm- 15 mm etc.Used for removing rust and ink stains, polishing metal parts, etc.It can also be used as a chemical reagent.

Uses:

- Marble & Granite Industry : Use for Marble & Granite polishing

- Environmental Coatings : Use for environmental Coatings manufacture

- Metal industry: Use for metal polishing and rust cleaning

- Chemical reagent: Use for chemical reagent

Potassium Tetraoxalate,Potassium Tetroxalate Pto,Potassium Tetra Oxalate,Potassium Tetraoxalate Cas 6100-20-5

HENAN JINHE INDUSTRY CO.,LTD , https://www.hntitaniumdioxide.com