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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Hi all,
I'm trying to repair an old radio receiver, it has a missing IC, from the schematic this should be a TBA 450, but I haven't been able to find any data on this IC. Does anyone have a datasheet or at least a pinout of this IC? Any cross-reference? Thanks in advance Frank IZ8DWF |
#2
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On 21 Dec 2011 19:55:38 GMT, put finger to keyboard
and composed: I'm trying to repair an old radio receiver, it has a missing IC, from the schematic this should be a TBA 450, but I haven't been able to find any data on this IC. Does anyone have a datasheet or at least a pinout of this IC? It's not much, and it's in Polish ... http://datasheets.pl/T/TBA/TBA450.pdf That said, it doesn't look like this IC belongs in a radio. OTOH, my vrt databook refers to the TBA450(N)(Q) as a stereo decoder in a 16-pin DIP/QIP package. Perhaps Philips and Siemens used the same number for different ICs??? FWIW, there are some possible hits he http://www.google.com/search?q=tba45...3Apdf+st ereo In fact there is a TBA450 stereo decoder in the circuit diagram at the bottom left corner of page 3: http://marchal.jean.free.fr/Schemas/Dual/KA215.pdf - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
#3
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On 21 Dec 2011 19:55:38 GMT, wrote:
Hi all, I'm trying to repair an old radio receiver, it has a missing IC, from the schematic this should be a TBA 450, but I haven't been able to find any data on this IC. Does anyone have a datasheet or at least a pinout of this IC? Any cross-reference? Thanks in advance Frank IZ8DWF I got one hit at http://www.datasheetarchive.com/, which said it is a Infineon Technologies Single-Channel Audio Power-Output Amplifier. No datasheet. PlainBill |
#4
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On 21.12.2011 21:35, Franc Zabkar wrote:
It's not much, and it's in Polish ... http://datasheets.pl/T/TBA/TBA450.pdf That said, it doesn't look like this IC belongs in a radio. It's probably a mistake (swapped digits). The IC looks like the reference oscillator for PAL decoders TBA540. |
#5
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Franc Zabkar wrote:
On 21 Dec 2011 19:55:38 GMT, put finger to keyboard and composed: I'm trying to repair an old radio receiver, it has a missing IC, from the schematic this should be a TBA 450, but I haven't been able to find any data on this IC. Does anyone have a datasheet or at least a pinout of this IC? It's not much, and it's in Polish ... http://datasheets.pl/T/TBA/TBA450.pdf That said, it doesn't look like this IC belongs in a radio. indeed, looks like a TV IC. OTOH, my vrt databook refers to the TBA450(N)(Q) as a stereo decoder in a 16-pin DIP/QIP package. Perhaps Philips and Siemens used the same number for different ICs??? it is definitely what's missing in the receiver. I guess it doesn't even have an equivalent. Thanks Frank IZ8DWF |
#6
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wrote in message
... Franc Zabkar wrote: On 21 Dec 2011 19:55:38 GMT, put finger to keyboard and composed: I'm trying to repair an old radio receiver, it has a missing IC, from the schematic this should be a TBA 450, but I haven't been able to find any data on this IC. Does anyone have a datasheet or at least a pinout of this IC? It's not much, and it's in Polish ... http://datasheets.pl/T/TBA/TBA450.pdf That said, it doesn't look like this IC belongs in a radio. indeed, looks like a TV IC. OTOH, my vrt databook refers to the TBA450(N)(Q) as a stereo decoder in a 16-pin DIP/QIP package. Perhaps Philips and Siemens used the same number for different ICs??? it is definitely what's missing in the receiver. I guess it doesn't even have an equivalent. Thanks Frank IZ8DWF Telefunken also used TBA... |
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