REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Friday 29 March 2019

HCL HCM9LWAT11 AND ACER CDB223PWL V223PWL SM20120424V0 – SMPS & BACK-LIGHT INVERTER BOARD CIRCUIT DIAGRAM - ZENER DIODE COLOR CODES

HCL HCM9LWAT11 and ACER CDB223PWL V223PWL SM20120424V0 – SMPS & Back-Light inverter board circuit diagram - Zener Diode Color Codes

Power and Back-light inverter board Schematics _ ACER_LCD_B223PWL and HCL HCM9LWAT11 _ Zener Diode Color codes.
Acer LCD B223 SMPS SCHEMATIC
Acer LCD B223 Converter Schematic
HCL HCM9LWAT11 SMPS Schematic
HCL HCM9LWAT11 Back-light Inverter Schematic
ZENER DIODE COLOR CODES
Most manufacturers stamp the ID right on the diode but some do use color banding as the method of identification. For purposes of alignment, the side with any color band closest to either side of the diode is the equivalent of the left side of this table. The three examples in the table when associated with the values in the lower table are identified as 1N64E for the top diode, 1N452G for the middle diode and 1N4762 for the bottom diode.