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Secrets of automnitol repair 1
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Pioneer KEH-P4450
Fault: Does not turn on. When turned on from a laboratory power supply, protection is triggered.
Remedy: Faulty power amplifier chip IC552 TA8251AH. The path is on fire.
LG TCC-670
Fault: The control panel starts blinking five minutes after operation. When the backlight is turned off, the panel stops heating up and the defect does not appear.
Remedy: Replace diode DL 901.
Alteration of car radios from American to European standard:
Toshiba TX-10 unsolder D 710
Craig D 309 rearrange to D 304
Panasonic CQ-I05EU unsolder D 625
Pioneer KEH-7500 unsolder D 508
Toshiba TX-90SM11unsolder D 864
JVC KS-RT45 unsolder D 717
Panasonic CR 301 EVA D 621-add
Pioneer KEH-5500 unsolder D706
Pioneer DEN 415 R607 rearrange to R611
Panasonic R 520EUS unsolder R613
Audiovox AU-949 D607,D609 rearrange to D608,D615
Sony XR-7070 D 322 add
Pioneer KE 1550 add D-ES
Pioneer KEH P4400 R 683 add
Sony XR-C300 unsolder JC 12
Pioneer KE 1818 D954 rearrange to D952.
Decoding car radios:
Brother asks for a code, press - 6 2 6 1 2 1 (the display will show - 7621), then BAND and that's it.
Blaupunkt - dial 9507 with the tuner, then BAND.
Hyundai H-810JE - press and hold the BAND button, turn on the power.
SONY CDX-805, 505
Fault: The defect appears approximately as a faulty laser (loses tracks, works unstable, etc.)
Remedy: Solder the variable resistor RV14.
LG TCC-1025
Fault: Permanent failure of the output microcircuit.
Remedy: Replace the capacitor that is in parallel with the power supply of the microcircuit.
Blaupunkt verona CR 31
Fault: Wrong code entered. The tape drive mechanism works, on the scoreboard "_ _ _", there is no sound.
Remedy: Leave the radio turned on for several hours, the inscription "COD" should appear and enter the correct code, if it does not appear then you need to unsolder the memory (93s14 or 93s46) and reflash more precisely reset the attempt counter. If the code is known, then connect the radio to the standard connector and enter the code again 30-40 minutes after the request.
PIONEER KEH-8960
Fault: Background when listening to cassettes.
Elimination: Turn on the throttles in series with the engine (on both lines) - the more, the better, and connect the points between the throttle and the engine with a capacitor, but not with electrolyte (also the more, the better). Clean the brushes and current collectors in the engine. Solder the "mass" to the engine housing.
LG TCC-6030
Fault: The sound is distorted.
Remedy: Check power amplifier.
PIONEER KEH-5350QR
Fault: When playing a cassette, at a volume above average - "mumbling" at low frequencies. The tuner sounds clean.
Remedy: Adjust, clean, replace magnetic head. Check if it is shortening on the body.
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