Sunday 31 January 2021

Philco PH14 CRT TV – Exploded view, schematic- TEA2035B (AUDIO OUTPUT), 24C08(MEMORY), TMPA8872(SYSTEM CONTROL-CHROMA-JUNGLE), TDA4864AJ(VERTICAL SCAN OUTPUT), ST1803(HORIZONTAL OUTPUT TRANSISTOR, 2645(FET-SMPS SWITCHING)

 

 It makes sense to avoid exposure to electrical shock.  While some sources are expected to have a possible dangerous impact, others of quite high potential are of limited current and are sometimes held in less regard.

Used ICs: TEA2035B (AUDIO OUTPUT), 24C08(MEMORY), TMPA8872(SYSTEM CONTROL-CHROMA-JUNGLE), TDA4864AJ(VERTICAL SCAN OUTPUT), TEA1506P(SMPS CONTROL), MSP3425C, TC4053BP,  ST1803(HORIZONTAL OUTPUT TRANSISTOR, 2645(FET-SMPS SWITCHING)

Exploded view
Schematic


Friday 22 January 2021

BLAUPUNKT (AUDI) AUTORADIO - Audi Chorus circuit diagram, Exploded view

 

BLAUPUNKT (AUDI) AUTORADIO - Audi Chorus - 7 646 243 380, Audi Chorus A8 - 7 647 243 380, Audi Chorus - 7 646 243 380, Audi Chorus A8 - 7 647 243 380, Audi Concert - 7 646 248 380, Audi Concert A8 - 7 647 248 380, Audi Concert Navi - 7 647 249 380, Audi Concert - 7 646 248 380, Audi Concert A8 - 7 647 248 380, Audi Concert Navi - 7 647 249 380

  For the process of handling the LEDs while they are supplied with their operating voltage and not covered by their respective filters or diffuser screens, the following instructions must be observed:

  Repairs and function checks may be carried out with protection glasses only.
The used glass material must have a UV- or sun ray protection filter (e. g. UVEX sport style 9186 088).

The operation with higher currents, also for short duration, is not permitted.

The viewing angle towards the circuit board may not exceed 60°.

(In the case of non-observance of the instructions serious damage to the eyes may result.)

Ex-factory condition

Audi Chorus:  This car radio can be operated with 2 passive front loudspeakers and of choice with 2 active rear loudspeakers. The switching-over takes place by means of the diagnosis bus.

Audi Concert: This car radio can be operated with 2 passive and 2 active loudspeakers or as a Bose sound system. In addition the unit can be switched to the US mode. The switching-over takes place by means of the diagnosis bus.


Pin assignment of quick-fit connector

 (The below illustrated unit must be exchanged completely, as the contact assignment of the foil can only be done in the manufacturing process.)

Exploded View

Schematic



Wednesday 20 January 2021

Precision 12 inch, Precision 5 inch and Broksonic 12 inch TV schematic

 Used ICs: UPC1366, D1366C, UPC1353, D1353C, UPC1031, D1031

Always respect voltages. While some may not be dangerous in themselves, they can cause unexpected reactions that are best avoided. Before reaching into a powered TV set, it is best to test the high voltage insulation. It is easy to do, and is a good service precaution.

It makes sense to avoid exposure to electrical shock.  While some sources are expected to have a possible dangerous impact, others of quite high potential are of limited current and are sometimes held in less regard.

12 inch TV schematic
5" TV schematic

Sunday 17 January 2021

BOOG DPS21K5 and ROCKFORD FOSGATE auto amplifer schematic

 

BOOG DPS21K5 schematic

USED Ics: TL074, IRS2092, IRFBA90



ROCKFORD FOSGATE AUTO AMPLIFIER – 100+100 WATTS -  SCHEMATIC

USED Ics: LM833SM, BUZ11[FET], TL494SM, IRF9540, IRF540H




Saturday 16 January 2021

HOOVER Tumble dryer troubleshooting – Condenser Dryer DYC9913ax

 

A10 appears on display

You’ve selected the “All in one” cycle.  It’s not an error code.

What may look like 'A10' in the display is in fact AIO which means All In One cycle has been selected. If this is not the chosen program then simply switch the control to another program selection.

Burning smell

Clean the condenser and filters.

A build up of lint and fluff in your dryer can lead to a burning  smell. Check the filter found in the door recess and remove any fluff build up, also remove the lower cover to reveal the condenser. Remove the condenser by turning the clips and pulling it out. Wash out all of the fluff build up by flushing water through the slots in the condenser with a hose or tap or simply plunge into a bucket of water until all of the fluff has been washed out. Re fit everything and try the dryer again, the smell may take a few minutes to clear. Watch our helpful video for more information.

Cycle won’t start.

Empty the water tank.

Check that the water tank found in the door is not full. Once it becomes full the dryer will stop working until the water is emptied away. Open the door and lift the tank off, taking acre as it may be heavy. Pour the water down your sink or drain.

Is the machine installed in a cold place?

Your tumble dryer has been designed to be used in a habitable part of your home. During the winter, cold temperatures are detected by sensors inside the appliance which causes it to shut down. This may occur in colder parts of your home such as a garage or out building during a 'cold snap' when we experience temperatures bellow zero. In these conditions the machine will turn on but not start up and the lights may flash. Simply warm up the surroundings or alternatively open the door, remove the filter and using a hair dryer blow warm air into the machine through the filter slot. Do this for a few minutes and then try the dryer again... it should now start to work. This is not a fault with your dryer it is simply due to the location of your machine during extremely cold weather. We recommend you re-locate the product to a warmer environment using a hair dryer to warm up the surrounding temperature

Is there electrical power?

[the fuse is found in the middle of the plug as shown]

damage to clothes

check that they are suitable for tumble drying.

Not all garments can be tumble dried. look at the care label found on the garment and check it shows the tumble dry symbol.

Garments not suitable for tumble drying may become damaged if dried in a tumble dryer.

Check the heat setting of the cycle.

Some garments are made from delicate fabrics that require a low heat setting when using a tumble dryer. Look at the care label to discover the correct heat setting or program to choose for drying your clothes.

Garments suitable for low temperatures should be dried on delicate - synthetic cycles or select the low heat option. Damage may occur to your clothes if you dry them on the wrong heat setting.

Does not switch off.

Anti-crease function h as operated.

 If you have selected one of the auto sense programs the machine will automatically end the drying cycle when the clothes are dry. To prevent them from creasing, the drum will occasionally turn until you open the door or switch the machine off.

This is may look like the machine is running continuously but is a very energy efficient way of reducing creases in the garments and is not a fault with the machine.

Drain hose fitting

How to fit the hose

NOTE, This accessory may only be fitted to machines with the water tank fitted in the door.

Dryer switches off after a few minutes of use.

Check the size of the load.

If you are drying a very small load or perhaps one item on its own, it is better to use the' time' dry program. The auto sense cycles have been designed to offer an efficient drying solution for your larger loads and the machine may switch off after a few minutes if a light load or just one thing is in the drum on an auto sense programme.

Error code 7 or 11 in the display

Check the filter and condenser for blockages.

Error codes 7 or 9

Clean the filter.

Should E7 or E9 appear in your display, switch the machine off and remove the filter found in the door as shown, and clean away any fluff or debris caught in the filter.

Switch the machine back on and try again, should the fault persist please contact us for further advice.

Error E3

Empty the water tank.

 Check the water container is empty. This may be in the door or behind the lower cover depending on your model.

Filter warning lights up.

Clean out the filter and condenser.

No electrical power.

Check there is electricity at the socket.

If your machine is not powering up then you could try plugging another appliance into the socket. If this appliance also appears to have no power, there is possibly a problem with the supply at that socket. Check the socket is switched on and that there is not an isolator switch somewhere in your home which may be switched off or tripped out. If there is an isolator or fuse box, check it is also switched on. Perhaps the main fuse or trip in your distribution box has blown? so check that out. If the problem persists you may need a competent electrician to restore the supply. Alternatively try the product in different socket.[Check the fuse in the plug.]

Not drying the clothes.

Clean the filter and condenser.

Check the filter is clean.

Sensor dry cycles are not suitable for the drying 1 item.

If you are drying a very small load or perhaps one item on its own, it is better to use the' time' dry program. The auto sense cycles have been designed to offer an efficient drying solution for your larger loads and the machine may switch off after a few minutes if a light load or just one thing is in the drum.

Not heating up.

Check the filter is clean.

There is a fluff filter situated in the door entrance of your dryer. For best results clean this before you start using your dryer. If it becomes blocked with fluff the machine will not heat up. Open the door and lift the filter out. Gently pull the sides to open it out and scrape out the fluff build up.

Rumbling noise.

Machine has a “running in” period.

Tumble dryers have pulleys and wheels inside the machine that make it work. Tumble dryers may be noisier than usual when first switched on.  Sometimes when the product is brand new or not been used for a while a 'rumbling' sound may be heard for the first few minutes of operation. This is normal as the wheels self lubricate but if it continues for more than 5 minutes ; contact the nearest dervice center.

Steaming up the room.

Some ventilation is needed in the room.

 The condenser dryer needs a good supply of cool air to work properly and effectively. If it is installed in a confined space such as a small room or cupboard the walls may appear damp and moisture will appear on any windows. For best results use the machine in a well ventilated room.

Taking longer time than usual to dry.

Time adjust feature not working.

This option only works with certail programmes.

note that the Time adjustment feature can only be used on the following cycles:

Whites, Synthetics, Anti Allergy, XXL Load.


Saturday 9 January 2021

How to enter the service mode of LG Flatron L1733TR, L1933TR color monitors, EDID data writing - Schematic

 

Video Controller Part.
This part amplifies the level of video signal for the digital conversion and converts from the analog video signal to the
digital video signal using a pixel clock.
The pixel clock for each mode is generated by the PLL.
The range of the pixel clock is from 25MHz to 135MHz.
This part consists of the Scaler, ADC convertor, TMDS receiver and LVDS transmitter.
The Scaler gets the video signal converted analog to digital, interpolates input to 1280 X 1024 resolution signal and
outputs 8-bit R, G, B signal to transmitter.

Power Part.
This part consists of the one 3.3V, and one 1.8V regulators to convert power which is provided 5V in Power board.
12V is provided for inverter, 5V is provided for LCD panel.
Also, 5V is converted 3.3V and 1.8V by regulator. Converted power is provided for IC in the main board.
The inverter converts from DC12V to AC 700Vrms and operates back-light lamps of module.

MICOM Part.
This part is include video controller part. And this part consists of EEPROM IC which stores control data, Reset IC and
the Micom.
The Micom distinguishes polarity and frequency of the H/V sync are supplied from signal cable.
The controlled data of each modes is stored in EEPROM.

SERVICE mode

Turn off the power switch at the front side of the display.

Wait for about 5 seconds and press MENU, POWER switch with 1 second interval.

The SVC OSD menu contains additional menus that the User OSD menu as described below.

Auto Color : W/B balance and Automatically sets the gain and offset value.

NVRAM INIT : EEPROM initialize.(24C08)

CLEAR ETI : To initialize using time.
AGING : Select Aging mode(on/off).
R/G/B-9300K : Allows you to set the R/G/B-9300K value manually.
R/G/B-6500K : Allows you to set the R/G/B-6500K value manually.
R/G/B-Offset : Allows you to set the R/G/B-Offset value manually.(Analog Only)
R/G/B-Gain : Allows you to set the R/G/B-Gain value manually.(Analog Only)
MODULE : To select applied module.

ADJUSTMENT To apply the MSTAR Chip.

Operating System: MS Windows 98, 2000, XP
Port Setup: Windows 98 => Don’t need setup
Windows 2000, XP => Need to Port Setup.
This program is available to LCD Monitor only.

1. Port Setup
a) Copy “UserPort.sys” file to “c:\WINNT\system32\drivers” folder
b) Run Userport.exe

c) Remove all default number
d) Add 300-3FF

e) Click Start button.
f) Click Exit button.

2. EDID Read & Write
1) Run WinEDID.exe

2) Edit Week of Manufacture, Year of Manufacture,
Serial Number
a) Input User Info Data
b) Click “Update” button
c) Click “ Write” button.

Set-up

Schematic

Scaler

Power & wafer

Inverter

Power


LG 32LK610BPUA, LG 32LK610BBUA LCD TVs – How to upgrade the software, fault checking method

  Software update procedure USB (1) Insert the USB memory Stick to the USB port (2) Automatically detect the SW Version and show the bel...